In August 2018 our construction company was contracted to complete a ceiling repair on a commercial property. We did not have a signed disclosure statement, but have documentation (e-mails, texts) that prove there was a contract. We have not been paid. The General Contractor is telling us that the landlord is refusing to make final payment. The General Contractor indicated that we may need to file a lien in order to get paid. Do we have a case since the disclosure statement was never signed?