Airtel Mobile Phone — Collection of Cheques

Address:

Bangalore, Karnataka

Airtel has a collection box in a building on Hosur Road where I drop my cheques. The collections happen daily but my cheques are not presented in time. it takes anywhere between 15-20 days. As the payments are not received I am harassed by dozens of phone calls following up for my payment with cheque details etc. I have mobile, landline and broadband connection and this is getting frustating. Earlier I used online, but Airtel has suspended services for that particular bank.
I raised several complaints, but they keep me on hold to find details and call gets disconnected after some time. I have to start all over again. I believe in making prompt payments, but it is Airtel own processes to blame, but instead of fixing their processes, they trouble you with following up. The complaints were closed without actual redressal and this is very serious. I need an answer from airtel.