I know this thread is old but... i've come across the exact same problem, i could not add funds and it'd say the info was wrong. No, YOU'RE wrong. But it ended with a happy ending, thank God for PSN Cards. And thanks to you OP, next time i try to add funds i'll go to that site.
The OP's suggestion didn't work for me. I was trying to buy "Soul Sacrifice" before the bonuses were taken off the market using my Credit Card (no way to get to store to buy a PSN Card) and it kept saying to use a valid CC. Tried on my laptop, desktop and PS Vita with no luck. So yeah, it's not always a solution for people trying to use Credit Cards.
I am also having this problem. There's only one reason I can see why Sony has not resolved this problem - it makes them money! Think about it - you can't add funds using your credit card so what do you do? You purchase a prepaid voucher from Game or wherever. The voucher is in multiples of five - games, etc. are not. So if you purchase a ten pound voucher and buy a game for 7.99, Sony will have 2.01 sitting in its bank account earning interest. But, if you were able to use your credit card, the exact amount of your purchase would be taken from your card and Sony would not retain any additional funds. Think how many millions they must have of funds that have been added to accounts but which the owner cannot access. It's a scam - why else would they not make it a top priority to fix a problem which means gamers cannot buy games! It's very cynical of Sony.
Just buy a psn card for the amount you want.. problem solved. For those who cant add funds. just buy a psn netork card for 20. 50. or 100$ fromthe store.. Problem solved funds in your account.
happy gaming in your future
Ever since Sony's recent "update" to the playstation store I have been unable to add funds or buy a game. It started out as me trying to get SR4, when attempting to buy the game I get "An Error has occured" no error code, and when I try to add the funds first it says It cant be done. I called Sony 4 times in the past 3 days, first being told the store wasn't done "updating" then told the server had to reset, then told to make sure my card info was correct, which it all is and has been for the past 2 years, then told that they can't do anything so I either need to make a paypal or go get a PSN card. Which is **bleep**, I already have money in my wallet So why the **bleep** should I have to spend more money then the game costs to get the game?