Who called from 2143804500

I get a minimum of 5 calls per day in my showroom.  The phone rings, no one is there and when I re-dail the number it says "this number is not in service.  Please re-check the number."
This particular number says "Plano, Texas."

called twice and hung up did not answer on return

Called, left no message

Left no message!!!!

Called twice in one day and did not leave a message.