Airtel — post paid data card bill mail not received from last 5 months data card no [protected]

Address:

Kurnool, Andhra Pradesh

Dear Sir,

I am not receiving post paid data bill my data card no is [protected]

I have visited your Kurnool Airtel office and they told we have updated the same.
I have received up to October 2017 from November month I am not receiving how I can pay the bill

how many times I have to visit your office please look in the same and clear the problem