Send them a cease and desist and tell them you're going to sue for attempted fraud (or better term): They have no right to their claim and are using abusive la

Send them a cease and desist and tell them you're going to sue for attempted fraud (or better term): They have no right to their claim and are using abusive language to make you do something under threat. You can get quite some money out of it I believe. IANAL and this is not a legal advice.