Got a call on my private cell phone and then within a minute got a call on my business cell phone.

Same thing. Received a call from this number. I didn't answer. Don't answer calls that you don't recognize and these kind of places will go away.

I did not answer, and when I called back, it was a busy tone.
Kind of glad I didn't answer, after reading the previous comments..

save this # as JUNK in your cell phone contact list & it will save any future aggravation.
Don't answer calls from this #.
For all you know they will come back with another # to annoy us.

Good idea to save it as "junk".  That would eliminate the answering it by mistake.