HDFC Bank — Deduction made for not maintaining account balance

Dear sir,
i recently open an account in hdfc bank through online, but there are no transsactions made by me since open the account due to not verifing kyc,
and then i got some messeges that some ammount is deducted for not maintaing the account balance. And it got something 2000 ruppes. how can a bank deduct ammount since i haven, t made any transsactions.
here is my details
name :- ankit kumar sinha
phone number: -[protected]
account number:- [protected]