Yes Bank — money not getting refunded

Address:

Bangalore, Karnataka, 560001

I was having a salary account with yes bank, i changed that company and salary was not getting credited to that account for long days and it became a saving account, there was some negative balance on that account, last month i got a text that if i pay 11000rs on that account then my negative will be waived off, first i diposited 500rs, then 2500rs. So from that 3000 rs 2400 rs got deducted suddenly, i asked customer care about the same, they informed me i have to diposit total 11000 rs at a time then all my deducted money will be refunded within 7 days, after 8 days also its the same, no refund, nothing, upon asking they are replying they need some more days, no clear notification. I am worried.