Who called from 3203518070

This number is on my caller ID and when I try to call it back it says it is a 'discontinued' number.  It also comes through another caller ID as 320-351-8013.  Same issue, when I call it back it says 'discontinued' number.  It is a land line from the Sauk Centre MN phone company.  I don't answer phone numbers I don't know and they don't leave a message.  They must have several roll over numbers!  Need them to STOP calling!

This number keeps calling but no one answers and when I call back the recording says the number is disconnected.

This number keeps calling leaving no message; anyone know what they want?

sauk centre mn

Number calls, try call back, no one answers.   My guess is they are trying to buy a note that we sold years ago.