How do I change the credit card CYDIA uses?

For some reason CYDIA is using an old expired credit card. There is no way to change it (that I can find) in Cydia.

Cydia is using Amazon payments and that card isn't even listed in Amazon Payments any more (it expired).

Because of this I can't make a purchase and I see no way to change the card. Can't even find a way to contact Cydia to ask (and from what I have heard the chance of getting a reply from them is zero to none anyway).

I guess I could create another account but then I'll have problems reloading previous purchases.

Eternal 28 said:

You can try to login to amazon payments and update your card or add a new card.

Click to expand...

I have 4 good cards currently registered in Amazon Payments. Cydia is trying to use a card that was removed many months ago and is no longer listed on Amazon Payments so the purchase is failing. That removed card WAS ORIGINALLY what was used by Cydia but is now canceled. Cydia keeps wanting to use it and I can't prevent it so it fails.