Airtel — message not sending or receiving since last 15 days

Address:

Airtel store, Latur, Maharashtra, 413512

Message not sending or reciving since last 15 days but no one solve the problem please help me.

I call for no of in customer care but no one responding
Also raise the ticket.
Also follow all the step he provided change the phone change the sim but still issue not resolved .
My all transaction and all the details submitted in this no
So lot of issues we face