Airtel — Airtel Falsely deducting amount from my account balance

Airtel has falsely deducted 10 rs from my account balance. Despite not answering or making any calls they have deducted the amount. 20 rs has already been deducted. I had faced similar issue back in December as well where I had lost 80 rs from my balance because of this malpractice. Either you justify the reason for deduction with proof or else I'll be forced to escalate this issue at higher level.