I missed the call and called back. It's a solicitation call.

"If you are not interested in receiving any future calls regarding our special promotion and would like to be placed on our do not call list, please press 1 now."

I've received this call multiple times and have always pressed "1" to be placed on their "do not call list" but the calls keep coming. This time, I pressed "1" and nothing happens. The message keeps repeating.

I ended up blocking the number through my carrier. What ever happened to the Federal do-not call list?