1. Contact the village committee or relevant land departments: report the situation to the house site issuing authority or land departments for investigation and verification.

2. Seek help: You can ask a lawyer or a legal service agency to provide legal help and complain to an authoritative organization to safeguard your legitimate rights and interests.

3. Notarization: If you think that your signature has been forged, you can apply to the local notary office for notarization to prove that you have not issued a certificate and you have not signed the homestead. According to the Regulations on Homestead and the Measures for the Administration of Homestead, the right to use the homestead belongs to the legal heir or other heirs of the homestead. Under normal circumstances, I also need to sign and confirm, and provide ID cards and other related documents.