diff --git a/api/models/call_log_event.py b/api/models/call_log_event.py
index 14ed7c2..6ab866c 100644
--- a/api/models/call_log_event.py
+++ b/api/models/call_log_event.py
@@ -1,18 +1,8 @@
 from api.mixins import TimestampMixin
 from api import db
-from flask_sqlalchemy.query import Query as BaseQuery
-
-
-class CallLogEventQuery(BaseQuery):
-    def call_sid_exist(self, form_data):
-        return (
-            self.filter(CallLogEvent.call_sid == form_data["CallSid"]).first()
-            is not None
-        )
 
 
 class CallLogEvent(TimestampMixin, db.Model):
-    query_class = CallLogEventQuery
     __tablename__ = "call_log_event"
     id = db.Column(db.Integer, primary_key=True)
     call_sid = db.Column(db.String(255))
diff --git a/api/models/registration.py b/api/models/registration.py
index 90ea7c0..5a756bd 100644
--- a/api/models/registration.py
+++ b/api/models/registration.py
@@ -10,7 +10,6 @@ class Registration(TimestampMixin, db.Model):
     user_id = db.Column(db.Integer, db.ForeignKey("user.id"))
     partner_id = db.Column(db.Integer, db.ForeignKey("partner.id"))
     program_id = db.Column(db.Integer, db.ForeignKey("program.id"))
-    language_id = db.Column(db.Integer)
     district = db.Column(db.String(100), nullable=True)
     state = db.Column(db.String(100), nullable=True)
     parent_type = db.Column(db.String(100), nullable=True)
diff --git a/api/models/system_phone.py b/api/models/system_phone.py
index 65ece13..2efc934 100644
--- a/api/models/system_phone.py
+++ b/api/models/system_phone.py
@@ -1,20 +1,8 @@
 from api.mixins import TimestampMixin
 from api import db
-from flask_sqlalchemy.query import Query as BaseQuery
-
-
-class SystemPhoneQuery(BaseQuery):
-    def system_phone_exists(self, url_decoded_system_phone):
-        return (
-            self.filter(
-                SystemPhone.phone.contains(url_decoded_system_phone[-10:])
-            ).first()
-            is not None
-        )
 
 
 class SystemPhone(TimestampMixin, db.Model):
-    query_class = SystemPhoneQuery
     __tablename__ = "system_phone"
     id = db.Column(db.Integer, primary_key=True)
     phone = db.Column(db.String(50))
diff --git a/api/models/user.py b/api/models/user.py
index df98c21..835d99b 100644
--- a/api/models/user.py
+++ b/api/models/user.py
@@ -1,6 +1,6 @@
 from api.mixins import TimestampMixin
 from api import db
-from flask_sqlalchemy.query import Query as BaseQuery
+from flask_sqlalchemy import BaseQuery
 
 
 class UserQuery(BaseQuery):
diff --git a/api/models/user_program.py b/api/models/user_program.py
index ca83077..2632d31 100644
--- a/api/models/user_program.py
+++ b/api/models/user_program.py
@@ -1,7 +1,7 @@
 from api.mixins import TimestampMixin
 from api import db
 from api import app, models, helpers
-from flask_sqlalchemy.query import Query as BaseQuery
+from flask_sqlalchemy import BaseQuery
 from api.helpers.common_helper import current_ist_time
 
 
diff --git a/api/services/call_log_event_service.py b/api/services/call_log_event_service.py
index 8fefc75..bac1cd4 100644
--- a/api/services/call_log_event_service.py
+++ b/api/services/call_log_event_service.py
@@ -1,5 +1,6 @@
 # This file is treated as service layer
-from api import helpers, models
+from flask import request
+from api import helpers, models, db
 from datetime import datetime
 from utils.loggingutils import logger
 import traceback
diff --git a/api/services/handle_event_service.py b/api/services/handle_event_service.py
index 65dc091..e394bfa 100644
--- a/api/services/handle_event_service.py
+++ b/api/services/handle_event_service.py
@@ -1,5 +1,6 @@
 import requests
-from api import models, app
+from flask import request
+from api import models, db, app
 from . import user_service as user
 from . import registration_service as registration
 from . import call_log_event_service as call_log_event
@@ -9,16 +10,18 @@
 
 class HandleEventService:
     def handle_event_service(self, form_data):
-        call_sid_exist = models.CallLogEvent.query.call_sid_exist(form_data)
+        call_sid_exist = db.session.query(
+            db.exists().where(models.CallLogEvent.call_sid == form_data["CallSid"])
+        ).scalar()
 
         if call_sid_exist:
             return
 
         url_decoded_system_phone = requests.utils.unquote(form_data["To"])
 
-        system_phone_exists = models.SystemPhone.query.system_phone_exists(
-            url_decoded_system_phone
-        )
+        system_phone_exists = db.session.query(
+            db.exists().where(models.SystemPhone.phone == url_decoded_system_phone)
+        ).scalar()
 
         if not system_phone_exists:
             return
diff --git a/config.py b/config.py
index ec9dfa7..d07abdb 100644
--- a/config.py
+++ b/config.py
@@ -34,6 +34,7 @@
         % POSTGRES
     )
 
+SQLALCHEMY_TRACK_MODIFICATIONS = True
 WTF_CSRF_ENABLED = True
 SECRET_KEY = os.environ.get("SECRET_KEY")
 
diff --git a/main.py b/main.py
index fffc1ad..844ed88 100644
--- a/main.py
+++ b/main.py
@@ -1,52 +1,52 @@
-from api import app, services, helpers
-from flask import jsonify
+# from pprint import pprint
+from api import models, db, services
+from flask import jsonify, request
 import json
 from utils.loggingutils import logger
 
 
 def callback(request):
-    with app.app_context():
-        json_data = None
-        form_data = None
+    json_data = None
+    form_data = None
 
-        if request.method == "POST":
-            content_type = request.headers.get("Content-Type")
+    if request.method == "POST":
+        content_type = request.headers.get("Content-Type")
 
-            if content_type == "application/json":
-                json_data = request.get_json()
-            else:
-                form_data = request.form
+        if content_type == "application/json":
+            json_data = request.get_json()
+        else:
+            form_data = request.form
 
-            transaction_log_service = services.TransactionLogService()
+        transaction_log_service = services.TransactionLogService()
 
-            try:
-                if json_data and json_data.get("type", None) == "retry_failed_log":
-                    retry_failed_webhook(transaction_log_service)
-                    return "Success"
+        try:
+            if json_data and json_data.get("type", None) == "retry_failed_log":
+                retry_failed_webhook(transaction_log_service)
+                return "Success"
 
-                ivr_transaction_log = (
-                    transaction_log_service.create_new_ivr_transaction_log(form_data)
-                )
-            except Exception as e:
-                logger.error(
-                    f"Issues with transaction logs creation for form data {form_data}. Error message: {e}"
-                )
+            ivr_transaction_log = (
+                transaction_log_service.create_new_ivr_transaction_log(form_data)
+            )
+        except Exception as e:
+            logger.error(
+                f"Issues with transaction logs creation for form data {form_data}. Error message: {e}"
+            )
 
-            processed = process_form_data(form_data)
+        processed = process_form_data(form_data)
 
-            if not processed:
-                return jsonify(message="Something went wrong!"), 400
+        if not processed:
+            return jsonify(message="Something went wrong!"), 400
 
-            transaction_log_service.mark_ivr_transaction_log_as_processed(
-                ivr_transaction_log
-            )
-        else:
-            return (
-                jsonify(message="Currently, the system do not accept a GET request"),
-                405,
-            )
+        transaction_log_service.mark_ivr_transaction_log_as_processed(
+            ivr_transaction_log
+        )
+    else:
+        return (
+            jsonify(message="Currently, the system do not accept a GET request"),
+            405,
+        )
 
-        return "Success"
+    return "Success"
 
 
 def retry_failed_webhook(transaction_log_service):
@@ -57,7 +57,8 @@ def retry_failed_webhook(transaction_log_service):
         payload["log_created_on"] = log.created_on
         log.processed = process_form_data(payload)
         log.attempts += 1
-        helpers.save(log)
+        db.session.add(log)
+        db.session.commit()
 
 
 def process_form_data(form_data):
diff --git a/requirements-dev.txt b/requirements-dev.txt
index 2219eaf..89e6b9f 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -1,4 +1,4 @@
 # Includes dev dependencies on top of requirements.txt
 -r requirements.txt
-functions-framework==3.5.0
+functions-framework==2.1.2
 pre-commit==2.11.0
diff --git a/requirements.txt b/requirements.txt
index 163ad58..46e0a2e 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,19 +1,18 @@
 certifi==2020.12.5
 chardet==4.0.0
-click==8.1.3
-Flask==3.0.0
+click==7.1.2
+Flask==1.1.2
+requests==2.25.1
 python-dotenv==0.15.0
-Flask-SQLAlchemy==3.1.1
-functions-framework==3.5.0
+Flask-SQLAlchemy==2.1
 idna==2.10
-itsdangerous==2.1.2
-Jinja2==3.1.2
-MarkupSafe==2.1.1
-psycopg2==2.9.9
+itsdangerous==1.1.0
+Jinja2==2.11.3
+MarkupSafe==1.1.1
+psycopg2==2.8.6
 python-dotenv==0.15.0
-requests==2.31.0
-SQLAlchemy==2.0.23
+requests==2.25.1
+SQLAlchemy==1.3.23
 urllib3==1.26.3
-Werkzeug==3.0.0
-watchdog==3.0.0
+Werkzeug==1.0.1
 google-cloud-logging==3.5.0