This number displays "VACTN IDEA SOS". Probably one of those "attend a seminar and receive a worthless coupon for a 2-day food poisoning cruise in the oil-ridden Gulf of Mexico", no doubt they got our number when my elderly relative passed away and we had the phone company forward her number to our line for a few months while we settled her estate.
Caller ID displayed the same thing. I run the switchboard where I work, so this is a business line. I opted to "remove" my number. The number they repeated back to me was so far off of the actual # I have no idea where it came from. It wasn't any of the company extensions either.