"Note: A credit/debit card is required to redeem this voucher. You will not be charged during the trial period. At the end of the trial your subscription will automatically renew into a 90 day membership where you will be charged. You may cancel your 30 day trial at any time."
So you need to cancel subscription in 30 days, if you don't...
http://eu.playstation.com/l...
"Note: A credit/debit card is required to redeem this voucher. You will not be charged during the trial period. At the end of the trial your subscription will automatically renew into a 90 day membership where you will be charged. You may cancel your 30 day trial at any time."
So you need to cancel subscription in 30 days, if you don't...