[Resolved]  HDFC Bank — hidden charges on hdfc bank

I am a holder of hdfc regalia card where i had received priority pass for using lounges across airport terminals which is complimentary for some visits on yearly basis. I had used the priority pass on 26th july (As per my statement). Unfortunately i have been billed 1800 rs.
Reason not known, here are the issues

1. As per new policy hdfc says priority pass card should be used in international airports and regalia to be used in domestic airports. Who informed and when? Sending spam emails wont help here hdfc

2. Without my approval or signature its a conduct of breach to debit my account. I had not used the card for paying even a penny in lounges

3. My relationship banker and their face book page are simply useless.

Time to quit my 17 year association with hdfc.