Bajaj Finance — Deducting INR 117 from my account illegally

Bajan finserv has deducted INR 117 without my approval this is highly unacceptable. I am not interested in any of Bajaj's product since they are a cheat. I had experience in the past and hence I closed my Loan as well and do no want to have any future contacts. Tried a lot contacting the costumer care but of no use. Please suggest me a better way to keep these thieves away. If I this gone money can't be recovered fine but in future these guys should not auto deduct any amount from my account. Please suggest.