Airtel — cross connection of airtel phone calls

Address:

500034

I have been using airtel post paid connection. Off late it has been noticed that when ever i dial a number, it first get connected to some random number and even without ring, someone already start talking. This happens invariably everytime and we have to cut and dial again to the correct number! And when we try to inform them, there is no place to place this complaint in their automated system. I am sure the connected calls are being charged.
This has been happening for past 2-3 weeks