Caller from this number rudely asks for a party, yells at me that he just spoke to the party (who isn't in) three minutes ago and calls me a liar! Offered to take a message and he slammed the phone down. Who does this number belong to?

I just talked to a guy from this number.  He said that he was Jeff calling from Ranger and he needed to talk to the owner.  He wasn't rude to me (not that I doubt your story because I've dealt with plenty of rude telemarketers).

Just spoke with this guy who says he was trying to find out if a client of his owed us any money.  He had no clue about our company and asked if I knew how much revenue our company made last year.  He was polite on the phone.  Sounds sketchy, huh?

Caller claims to be from Ranger Financial Services or RFS. Never heard of them. Asked for the owner, has called about a dozen times now and has only left a number once. Their website shows them as a collection agency. Toll free number is 866-977-5611.