What is Removal DNC

I think it it is a telemarketing call, and if you wish to be removed  simply call back the number and add yourself to their DNC (=Do Not Call)

I wouldn't leave a number, then they know that it is a live one.

That is not how to get on the do not call list

sounds like a scam.

When I answered one of these calls with a business greeting, they just hung up on me.  Being rude is not a good idea!

I am not so sure it is a scam JA.  I think these guys have a little fire burning under them to obey the FTC rules regarding removal, and they now really remove people from their list in order to stay out of trouble....

Right John keep trying to fool people... scammers don't take people off their lists, but the do set up decoys like calling back to get removed as a trick to harvest good phone numbers.  

Don't answer, if you do answer have a loud whistle handy in case some subhuman actually comes on the line!

And keep those FCC complaints coming - yes, it's FCC not FTC, not that "John" wants you to know that LOL.