Airtel — unavailability of 4g network in my area

Address:

Ahmedabad, Gujarat, 380016

I m residing at 30, punjab society, nr civil hospital, asarwa, ahmedabad-380016.
I had done recharge of ₹ 399 on 1st september. But i was not knowing that my amount will go in vain. There is unavailability of 4 g network in my area. It's show 4 g on the top of my mobile. But it's working like 2g.
I had also complained several times on customer care 12118. But the response was negative. They told me to resolve my complain within 72 hour's, it's more than 72 hours now.
I registered my complain on 2nd of september.
Take action as soon as possible.
(M) [protected]