Who called from 7345231100

Called, left no message. When I call back, it just rings and rings, no answer.

Exact same thing just happened to me. They called me 4 times in 3 minutes. I thought someone died. I called back, and no answer.

They called me too.  It's UPS doing call backs.

Received two calls within 5 minutes from (734) 523-1100, no message. When called back no answer after long period of time, also beware, when calling this number although it is ringing, the line is open and microphone is broadcasting (mic is on).

same thing just rings said it was us parcels but im not expecting anything