I have been trying to purchase OCA SE 8 mock exam using the visa credit card but its showing "card not accepted". I also tried to pay using PayPal, but it also shows the same. Could anyone provide alternative solutions for this? Thanks in advance.
This happens when your card does not have international payments enabled. You will need to talk to your bank to enable international transactions.
As Ganesh suggested, it would be better to contact us through email with your name and emailid so that the exact cause of failure can be traced.