We are homeowners in Texas. We contracted a concrete contractor to complete some foundation work on our homestead. The job was completed and we paid him in full. We just received a notice from the concrete supplier stating there is a balance and a lien can be filed. Notes: -The contract we have with the concrete contractor does not have both spouses signatures. -The contract was not filed with the county. -The contracted amount was paid in full when the job was completed. What can we do to ensure we're not paying double? Can the supplier do anything to us?