I have used Official Payments to pay taxes with my United Visa several times now and have been quite pleased. Something seems to have gone wrong with my quarterly IRS payment last week, however, and I can't get anyone on the phone at any of the numbers they list, only "automated" responses. I am some kind of p.o.'ed. There are substantial sums of money involved and I expect to talk to a live person, not a recording so my questions can be answered.
Anyone else have problems with Official Payments? (The double miles offer is on until at least the end of the year, and I intend to keep banging it, that is unless Official Payments does not perform satisfactorily, e.g., doesn't answer phones.)