[Resolved]  Matrix Cellular International Services Pvt Ltd — fraudulent billing

I used 2 matrix cellular SIM cards in connection with foreign travel and I paid the charges immediately on receipt. After a few days I was sent another bill which included multiple sms (purported to have been sent even when the SIM was not in the phone). Apparently these sms are some kind of special / premium services which Matrix is not able to explain (each sms is charged at over INR 200!). I have written many e-mails but the standard response is that the services have been rendered by a genuine (!) network partner. Matrix is now threatening legal action (including criminal action) citing Indian Penal code. It is hard to believe that Matrix is a professional company. This is plain extortion.