Same here, did a search and got MCIMETRO something...very annoying...tried to call it back too and got "all circuuits are busy"...lets block this number....
If you cal the number back (201.347.4405), you can push no. 2 to be placed on their do not call list. You have to call from the number that is getting the calls though. I just did it, not sure if it works yet. I'll keep you posted if it doesn't work.
sorry to tell you this, but pressing 2 to have your number removed from their call list does not work.it's more like a "keep calling list" i tried doing that several times but they keep calling. very annoying.