Found out this cellphone is on the same network as mine, but in a different city. Sent the caller a text, and they texted back with an apology. Evidently a friend of theirs had recently changed cellphone numbers and got one that's close to mine. Caller was probably transposing a couple digits in error. Hopefully this solves the problem.
Had several calls over the last few weeks from this phone number. Caller never leaves a voicemail. Reverse tracking puts the owner in the Prairie du Chien area of WI, however it's identified as a cellphone. Becoming a pain in the neck....
Found out this cellphone is on the same network as mine, but in a different city. Sent the caller a text, and they texted back with an apology. Evidently a friend of theirs had recently changed cellphone numbers and got one that's close to mine. Caller was probably transposing a couple digits in error. Hopefully this solves the problem.