You may be able at least to report their faking the IP? This Ecosia search should display many choices... https://www.ecosia.org/search?q=report+ip+address+abus

You may be able at least to report their faking the IP? This Ecosia search should display many choices... https://www.ecosia.org/search?q=report+ip+address+abuse https://www.ecosia.org/search?q=report+ip+address+abuse