I was traveling to Mauritius from Delhi Int Airport, I bought this card from a stall at the airport itself. I barely used this card without internet but they charged me with 3000/- Rs that to got deducted from my credit card without and secure code confirmation or without informing me.
People travelling with bought sim card(Local Operator) from Mauritius itself and settle with Rs. 1000.
Matix is fooling people, I would suggest to get card from your destination countries on arrival.