I know it is an inconvenience, but couldn't they just maybe get a new router and see if that fixes the problem? Surely a cheap router is better than getting your house ransacked by police?
It won't make any difference if it's caused by some random router being correlated with their physical address. Phones connecting to that router will still be reported as being located near the house, even if the family cut off electricity and wrapped the house in a Faraday cage.
