Kotak Mahindra Bank — unfair amount deduction as debit card annual charges

Address:

Bangalore, Karnataka, 560066

My cust id : 42639440 & debit card ending with xx8662.

Recently i have changed account into normal savings account from salary account.

Now bank deducted 885 rs as annual debit card charges? Why.
When my account was salaried account there is no charges after converting into normal account why there is deduction? This is totally unfair.

I want my money to be refunded and this card should be cancelled.