What REALLY grinds your gears?

[mooby]

This usually happens 2-4 times every year, the county shop I work at is the largest in the county and has a lot of vendors. All invoices must be ran with our shop specific credit card and we need the cc slip with all invoices so they can be processed and verified. So today one of our vendors had our card decline for whatever reason, so she ran it 4 times total before she gave up and called us. After the 2nd attempt the card gets frozen to prevent fraud, so all she did was freeze the card so now no vendor can use it. At 4 pm on a Friday afternoon it won't be fixed until the accounting dept gets it resolved with the bank on Tuesday at the earliest which means all of our vendors are going to be calling us to let us know they can't charge parts to the card. Most if not all of our vendors are cool with sending us parts because they know we pay our bills on time but it creates a massive hassle with a backlog of un-charged invoices all because one vendor will repeatedly try to charge the card when it gets declined.