Who called from 7271428989

I answered hello and a male voice asked me if I could hear him.  I hung up as I did not know who it was and it sounded fishy.

Caller ID was Name Unavailable. I never answer such calls. They left no msg. Blocked.

Caller auto blocked by my cell phone call blocking service.

Called last night and this morning (May 17 & 18). Caller ID showed "Name Unavailable" I picked up, said nothing and 30 seconds later , they hung up. Probably scammers or debt collectors

Called several times, hung up when machine answered.  Called ID says invalid number.