go to stanacard.com and use referral code; 270907. this card is easy, convenient, and clear. you do not have to dial all those card no, pin no, phone no. instead, you dail ust one phone no. and more great thing is that you'll get double the mins you buy. and as for referral, i will get same amount of min too. next time if you refer it to someone else your friend will get the double min and you will get the same amount of min.