Airtel — regarding indoor network issue

Address:

Ahmednagar, Maharashtra, 423603

I have a network problem since last 6 months. There is call drop problems for outgoing calls and sudden range become low/emergency only. Some times cell phone operates on 2g even though the cell phone is 3g/4g dont konw why it happens. I have also registered complaint to 198 but still problem is there. Even i have made my sim card 4g still problem is there.