Trx is debited not authenticated per RBI mandate

Location/place: Bangalore

Name of company/service: HDFC Bank Credit Card

I have received a message from AM-HDFCBK: stating that “Your trx is debited to HDFC Bank CREDIT Card for Rs. ***** in BANGALORE at GOOGLE INDIA PVT LTD on 2013-06-29:18:30:51.This is not an authenticated trx as per RBI Mandate effective 1 May 12.
I was not notified of any such transaction or made aware of this kind of transaction. I am not sure if this is a valid transaction and the company call centre are just transferring blames rather than a reply.