State Bank Of India [SBI] — Complaining about not proper helping from bank about my lein applied

Address: New Delhi, Delhi, 110003

I have a balance of 3700 something.. But now i have a balance of zero and shown lein amount of 12000.. I talk to customer service refer to speak to bank.. When i speak to branch manager they don't give me difinite answer said it might be because of suspicious transection which i withdrawn 6000 before the lein applied but i swap it for 2 times only from atm cook the first atm there is no money said wait for a day but nothing happen he also sd to talk to customer service i got confused. I don't have any debt with them but yes i just recently start using credit card but my first due date is yet to come.. It can be possible is because of credit card please help to remove lein amount