Matrix Cellular (International) Services Pvt. Ltd. — Wrong charges

Address:

Mumbai City, Maharashtra

I had purchased my matrix card during my china visit in may, 2013. Immediately after my return, the due payment was paid to them through my credit card issued by hsbc bank.

Today, i received messages from my hsbc bank that matrix has again charged my credit card for amounts of rs. 4354.22 twice at 1210 hrs and 12 20 hrs.
Both the above transactions are fraudulent and i have not used the services at all.
In june earlier, they have charged second time erroneously and after challenging them, they refunded the same.
I request you to take necessary action by strongly condemning the fraud and compensate me for the same.
Thanks & regards
Srikanth