Idea Cellular — Deducting my balance without my consent

Idea always finds different ways to deduct my main balance - some of the ways i have experienced repeatedly are-
1. Receive a call from an unkown number and your balance is deducted just for picking it.
2. Deduct for caller tune, something which i have not signed up for.
3. Receive a promotional sms from idea and balance deducted.
4. For validity of talktime extension balance deducted automatically.
Etc.. There are many more i have been facing and this is highly frustrating and not the way you want to treat your customers
I have almost lost 500rs on this scam of idea