About 6 months ago I had 3 cards declined at an automated parking garage several times each. I inserted the 1st card like 5X and deny, deny, deny... so I put in a 2nd card, denied. I inserted the 3rd card and denied. WTF!?! I had no idea what the hell was going on because I had plenty of money in the 1st (debit account) to cover the $30 and was nowhere near my limits on the CCs. This was right after a theater performance and I'm one of those people that gets out of dodge just as the applause is coming to a close (so I can beat all the other schmucks in line at the parking garage). So here's a lobby full of people waiting to leave, and my date!, watching me fumble through my wallet getting these cards declined. I feel myself starting to turn a little red in the face from both anger and humiliation when finally, the 1st card went through. I have learned to carry a bit of cash on me at all times. I still have no idea what happened there.