Idea Cellular — Illegal deduction of 29 as mydala powerdeal

Address:	Nagpur, Maharashtra, 441102
Website:	idea

I have been charged for rs.29 by idea for downloading powerdeal mydala. I don't even know what's mydala and i haven't downloaded any deal from any site or even not installed any app.
How can they deduct the amount of rs.29 and when i talked to customer care and complaint about that they are telling such stupid things that you have downloaded the deal or subscribed. I'm not satisfied by talking with customer care. I wanted to know what's the reason for this deduction in the name of mydala.