Billing

I received an email saying they were unable to process my payment, but it shows that payment was received on the Homestead site. The money has not been taken out of my account, so I was going to update payment to a different card (even though this one should be working), but it won't update my payment. It just keeps saying "sending" and it freezes up or it says something along the lines of that cannot be done right now. I have tried this on three separate days on different computers. Any ideas before I call for help?