a word of warning: make sure you verify that the payment has been posted for the correct amount. It can be hard to understand numbers on the phone. The rep made a payment for $195 instead of $495 for me. I'm glad I checked online to see how much my balance went down by.

You can see the last four of the card used by going to payment history page:
https://www.accountonline.com/cards/...hPayHistory.do