Any and all calls that come in that say "unknown name" or show a spurious source on CID are NOT answered. EVER.
This one showed "Whiteriver, AZ" on CID. But the number actually is sourced in Tubac, AZ. Not surprising as 520 Area code is NOT in N. AZ but it IS in So. AZ. Another scammer. For your own good, PLEASE don't answer these calls!