What you describe is known as breach of contract. There may be other equitable claims and/or statutory claims that can be asserted, such as the lien that you describe. However, the remedies available to you depend upon the terms of the contract and many other factors. If you have lost a significant amount of money, then you should seriously consider hiring an attorney licensed in Mississippi.
Disclaimer: This answer is strictly for informational purposes, and should not be considered legal advice.
A material supplier to the contractor - which you appear to be - has a right to file a construction lien on the property (for which they supplied materials) after providing written notice to the property owner pursuant to MS Code Section 85-7-181. I wouldn't recommend that you try to file a lien without an attorney; however, you could try after consulting the above-referenced statute.