Caller was trying to sell diesel fuel supplement. As soon as I began to respond (saying that I had looked into it and wouldn't be interested), he said something into the phone and hung up. I couldn't understand what he said but I don't think it was too bad. The insulting part was being hung up on when I was trying to politely decline his offer.
These people are as annoying as all get out. They either pretend to be a trucking company, or some sort of investment type company - and they always ask for the owner of the company. They call constantly. We tell them we're on the DNC list and ask them to remove us from their call list. Does no good. They call from different numbers (all w/the same area code + exchange). When you Google the #'s, you'll see they all call from the same location/address. They are trying to sell diesel supplements.