refuses to leave message.  comes up "unknown"

I dont know who this is? they called me twice in two days. they do not leave a message.

Called two numbers that I own.  Recently used these two numbers together at Sears, with Sharp repair service and with Directv.  Caller did not leave a message.

If you have a scheduled appointment with internet or satellite co. they use this line sometimes as a method to remind you of your appointment.

A young woman from that number saying it was a reminder from direct tv. She said: "A reminder for mr. Kevin" and when I said wrong number she just said. Thanks.... weird

A lady called saying that was a reminder for my direct tv. She asked if I was kevin, when I said wrong number she just said ok thanks.

Appointment reminder from my cable company.