Airtel — worst data service in my 4g hotspot (postpaid)

Address:

Kolkata, West Bengal, 700047

I have an airtel postpaid connection in my 4g hotspot number with complain number[protected] &[protected].
This complain is pending since 6 months.4g: does the word mean you will not be able to browse any normal page like gmail, facebook etc.
It really frustrating to use such a telecom provider who doesnot have guts to tell me when is the timeline of the issue to resolve, but in the other side they have taken the payment of rs 3540 on the advance rental plan.

I will be adding all the details time to time on this portal to make people aware before choosing such a worst provider.