Site prep, carport

[FL Grandma]

Central Fl Gulf Coast

Bought the lot. Bought the house. Called the construction company for the carport, shed, bricking in around the bottom of the home. The company I called refuses to work for me because they bid the job once for a Mfg. Housing Sales Company and wont bid on the same work for anyone else.

I changed manufacturers because of things in the home the first manufacturer was not able to provide. The salesman does not represent the second manufacturer. Now the construction company wont do the work.

Where do I go from here?