Airtel — not able to use proper internet and calling (indoor) service in our location

Address:

savlapur Ta. Arvi Dist. Wardha Maharashtra - 442201

There are network problem in our area so i had registered complaint several time on airtel thanks app and on customer care but untile now no action take place. And network type automatically change form 4g lte to other at any time. Sometime calling suddenly disconnect and unable to make video call.
Please fix indoor network problem as well as calling issues. As we are unable to gave our online examination due to this network issue.