Very likely a shady auto loan or mortgage loan company. May even be the infamous Rachel from Cardholder Services with the lower credit card interest rate scam.
When the answering machine picked up, whoever it was didn't say a word, it's was just dead air. I'm sure if it we're anyone I know, they'd leave a message. I suppose in that case, it's safe to assume it was a telemarketer scam or something.
Very likely a shady auto loan or mortgage loan company. May even be the infamous Rachel from Cardholder Services with the lower credit card interest rate scam.