It *sounds* like you have a written contract with them, because you have referenced warranties. If so, your contract would determine what your rights are. No one here can answer your questions without being able to read the agreement. It could, for example, dictate that you need to go to arbitration, in the event of a dispute. It could dictate that all disputes must be settled under Texas law, in the State of Texas. Or it could say none of those things and have something else, entirely. There may be a clause which limits their damages.
For all of these reasons, you need to take your contract to a lawyer to be reviewed so you can determine how best to proceed.
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