Saving Money to Pay off credit cards

I finally have enough money to pay off one of my credit card bills. I called them and they said they could not take a personal check that I would have to send a certified check or money order. I think they just try to make it as difficult on a person as they can. It's so hard to save money these days, they better take the money when I offer it. I can tell this is going to be a longer road then I wanted to take.