I am based in UK and I must have had 10+ calls from this #. They ring my mobile. I have never managed to answer them! I have been in my car, stopped etc , call stops, no message. Then 5 minutes later calls back!
If I return the call it states that it is not available.
No reason to think this is any scam - just a very annoying idividual.
I love people like you if something doesnt sound right or just a little off you call it a scam people like you are the reason why americans can't evolve