Huge Upholstery Disappointment

Found what looks like "curry spice powder" under the "65 Formula S bucket seat I just paid $125.00 USD to re'cover. The guy wanted to use fabric on the seat bottom but I insisted he use the burlap I provided. I chose the camel color and the guy was to provide the labor and other materials. Not only did he not replace the 55 year old foam, but now the seat back has no support. The back of the factory seats have a solid feel (like knocking on wood) but his seat only has the vinyl material with nothing to back it up.