Who called from 7037214212

Called my cell.  Left no message.  Called back on another line.  Rang 4 times then disconnected.  Blocked.

Answered.  Asked for someone who wasn't at this number.

The caller asked for personal information and confirmation. When I asked for what purpose, caller kept saying he needed to verify my name & address. I gave out no info and hung up on him. I called him back from different number; it rang 5 times and disconnected.