[Resolved]  Airtel — "[protected]" we are receiving harrasing calls on our mobile

we have a data card of airtel

as our laptop need repaire we have stop using the data card

it has some dues amount . when we receive a call regarding that then we said to issue a sarrender letter so that we can close the airtel account.

But isspite of this from the airtel, no"[protected]" we are receiving harrasing calls on our mobile

please advise