Are these guys for real?  Was pretty sure I paid off everything.  What do I do, any suggestions?

They can't do any thing. It's a scam being run out of India. Ignore the calls.

got the same message bunch of idiots.

I received a message that I could barely understand telling me they were filing in California court and they had sent papers to my local police department and I needed to go get the papers and have my lawyer call them so on and so forth. I checked w/my police department and they knew nothing. I couldn't even understand what law firm he was supposedly calling from.

Ignore the message.

If you really want to irritate them call back requesting documentation of everything. They won't send it and in most cases they will tell you they can't send it to you or they don't have to. I've heard several different responses. One company almost had me convinced UNTIL they told me the date. Luckily I had just recently changed banks so I knew without a doubt I didn't owe the money. Which obviously lead to an argument and confirmed my suspicions of fraud. Real debt collectors try to work with you not bully and scare you.