Server Error

I chatted with an agent, he tried to make the payment himself using my saved banking info online which was unsuccessful. Then I used a different card but got the same error. He insisted that my cards (all of them together) were not working and I should contact my banks. I told him that I regularly use my cards (I just used one of them a few hours ago) so I am pretty sure that they are working fine and also there is no way that my cards stop working altogether. Yet, he kept saying that there is nothing wrong with Shaw account/service and he cannot help.

Then I called Shaw and I was on the phone with another agent, he tried again and failed. We tried paying without logging in and we failed. Then he suggested that I should try again later. I informed him that I already tried doing this several times in the last couple of days and nothing had changed. Yet, he said that he cannot do anything to help.

So would anyone please help me get rid of this issue and pay?

Thanks