Airtel — no network/poor services/sim not activated

Address:

500008

I had purchased a fancy number from an airtel dealer payed 1500 rupees.
The number is activated but there is no network at all.
I have been following up with that guy, who gave me sim, he has been saying me the sim has been activated but there is no network at all. And one guy abused me like anything using such an ugly language.

I dont understand why airtel is being poor in providing customer services. Customers are paying money for you guys to provide best services, we pay you money to serve us better.

Airtel is not proceeding faster in terms of network issues and complaints. As being the biggest network of india, airtel is losing its credibiltiy thats y ppl are opting for new netowrks.
I have raised many complaints regarding the network issues to the cc but not yet resolved.

Somebody please help me.