Something has gone terribly wrong with Amex payments through Paysystems.
1. Payments are being declined, with no notification being sent. Not all of them...but over the last week it seems to be all payments for a few particular days have been declined.
2. Some payments are being marked as captured, but for $0. Successful payment notifications are being sent, but:
Dear EDIT Group,
The transaction listed below has been successful
on Dec 24 2003 1:47:09:720PM:
Order Type : Recurring Transaction
Total Charged : 0.00
3. The most annoying one...the client gets debited and receives notice that the payment was successful (for the right amount) but it doesn't go through due to banking errors and we'vebeen advised via a support ticket that a credit is then being sent to the client. That credit hasn't reached one of our clients in a week, and may not for 14 days as with any Paysystems refund, so we still need to charge the client once they've received their refund.
Time to attach Amex cards to our merchant facility I think.
It's worth checking back over Amex transactions you've had, as they may not be as successful as they first seem.