[Resolved]  Matrix Cellular — Unwarranted email asking payment

Address:

Ernakulam, Kerala, 682018

Even after making payment, collected by the representative directly by cash, email was sent from Matrix asking to make payment. In that process my credit card also got blocked.
Customers are believed to be king, but in this case Matrix was torturing through email. I advise others, never take Matrix SIM when you go abroad. It will kill your purse.