Airtel — wrong numbers

I have this postpaid connection with AIRTEL close to 9 years now and recently my usage has become less . Now AIRTEL found a new way to increase my billing.Every time I call the call goes to a wrong number and I have to listen to all abuses from the person who receives that call . Strangely enough it happened so often that today the lady at the other end threatened to lodge a police complaint against me for calling her. I also have other side for this problem .I get calls from someone who first asks for a particular person and when I reply that there is no one by that person the caller starts abusing . I called up customer support and requested them to provide me the details of the caller and they quote privacy policy of the company does not permit. It looks like they want to get rid of customers whose billing is decreasing and found this to be most effective solution . Can anyone help me with finding out the caller's identification other than a police complaint or tipping the AIRTEL executive in the Relationship Centre ?