Airtel — airtel voice break and network issues

Address:

560037

I am in airtel network since 10 years and my home network is andhra pradesh. I am on roaming in bangalore. For the past 1 week the signal quality is very poor and i had contacted the customer care they are saying that signal quality is very good. Till now the problem is not solved, many of my friends in the same area is also facing the same issue.

Please help me out, whether the issue is due to roaming or not.