I bought a printer on a Master Card. They *claimed* they called me to check on the transaction; I think they put the wrong number on speed dial because they said they called several times. Anyway, I went to renew my car registration online, and it bounced! WTH? I called up the customer service number, had to answer security questions, and they reinstated my account right away. I thanked them for their vigilance, and admonished theme to dial the phone number, not put it on speed dial, in case there was an error.