Airtel — poor service and offers - complaints are not addressed in time

Address:	Kolkata, West Bengal, 700026
Website:	www.airtel.in

Since 11th sep'2013, i've called in the customer care thrice but they are yet to resolve the issue.

Issue description: prepaid recharge was done on 14th of august with rs899 inr with the offerings like unlimited voice calling to any n/w, 210gb data and unlimited roaming incoming free etc. For 84 days. However, all these offers have stopped working after 28days.

Condition:offers are applicable on 4g sim and handsets only, which i do have.

They also promised to credit back the amount that are getting deducted from my main account balance - i am yet to get them back and there is not further updated being provided to me yet.

The reference numbers for all the communications i had with airtel are:
Cbnrd[protected]
Cbnrv[protected]
Cbnrd[protected]