Two ways First way, they get reports from people/companies/band users and will maybe act on them. This assumes it's in a band they care about, people report s

Two ways First way, they get reports from people/companies/band users and will maybe act on them. This assumes it's in a band they care about, people report stuff in the ham bands all the time but they nearly universally ignore those. Second way, you interfere with something safety critical, such as an airport, where they may have installed equipment to monitor RF in particular bands. TL;DR: unless your neighbor is an RF professional and can determine that they are being interfered with instead of "huh, the wifis no workie...shrug", they just won't do anything.