Who called from 7729190000

I am on the do not call list and this was a machine offering me a cheap mortgage. Left very long message.

Same as above, reduce your mortgage, called my cell phone.

Same as above: on DNCall; unsolicited inbound call; lengthy message; no name given.

called no message

Received at least three calls between two days from this number. I try to call back and they tell me the number doesn't exist. No message left.
Anyone know of Solicitation Policy for Cell Phones? I've heard that companies aren't allowed to solicit to Cell Phones- in which case, I would like to have a report filed against this company and number.