answer:Is there no stalking or protection from harassment legislation you could use to make them stop? Here in the UK, I would first write a polite letter explaining why I thought I wasn’t liable. If they persisted, I would write a similar letter for a second time. Further contact from them would result in a ‘put up or shut up’ letter, inviting them to take me to court. Any further correspondence outside of legal proceedings would then be reported to the authorities under the Protection from Harassment Act. If they have a case and you do owe them money, it’s probably best to pay up.