Never ever go and buy a Matrix SIM, If your travelling abroad please stay away from Matrix Stalls in Airport because you may get tempted to buy one since your travelling. I had a horrible experience with them, Its like this I bought a SIM since I was travelling to Singapore and Malaysia for 7 Days and they took a deposit of 5K from my credit card.
Finally, after a 20 days of my return they have swiped all the money from my credit card saying that the bill amount is 150000 .Can you guys believe..????? Also, they gave one false bill showing Singapore Dollar value as 43 INR where that time was 41 point something.
Really, the biggest crooks of all time.
Please stay away..