Airtel — internet and calls not working

My postpaid number has a data balance of 300+ gb and the customer executive (Automated) tells me that i have used all the data for this current month. Further upon raising a complaint on my airtel app i was given a reason "change your phone"
What the hell is happening in airtel? Will the robots now run a company completely?
I have a severe signal issues, kindly fix and i am unable to reach out to a real person at 121. Kindly connect.
Worst service provider