Yes Bank — unwanted charges in my salary account

Address:

Thane, Maharashtra, 400612

I want my salary account to be closed, it has been long time since i quit my first company and you people are still charging me negative balance of total inr 5000.
You people promised me it was a zero balance account and charging me now. According to rbi rules, no banks can charge negative balance for salary account. I want my account to be closed as soon as possible.