817 9280198
March of Dimes. Calls several times a day. No message hangs up.
These unsolicited calls are why most disconnect their land lines.
If Non-profits, organizations and any company wishes to ask for donations, then don't go hide behind a number that has no I.D. name attached.  Good way to offend anyone that would even think of donating.
Sorry approach, hiding the organizations name and hanging up without a message.  

calls and hangs up

I called it back - march of dimes.