Do you have a neighbor or friend who could come over and stay with you. It might make yo feel better to have another person in the house with you. Lock your doors and only let the dcp that are picking up in. Let your local police know and have a copy of their contract ready if the police show up. Make notes of everything they say to you. If they call again tell them you will no longer speak with them, that all communication must be done via email (this gives you proof of what is being said), if they insist on speaking to you then inform them you will only speak with their lawyer and not them directly.