I felt like a deadbeat...

Went to charge the food purchased at Kroger's today and was taken aback when my card came back "Not Authorized". Tried it several times.... same thing. Pulled out a different credit card and sneered back at the cash register lady... I was shocked when it, too came back as not authorized... Now the lady really looked askance at me. I suspect she was about to call the manager or start snipping up my cards. I knew I did not have enough cash on me to pay for the $87 with of stuff. One last chance. Both those cards were Master Cards... different banks,though, so I pulled out my last all purposed credit card... the one I really don't like but have it because its all Costco uses.... American Express. Zip, zip.... transaction approved. Now I was suspicious of possibly my identity has been stolen and my cards maxed out. Went home and went on line and found both bank balances normal. Called one of the banks and found nothing unusual with my card. Makes me think I should shit can the one master card and get a visa card just for variety when one doesn't work. Felt like Richard Nixon.... "I am not a crook!"