Green Monster solar water heating Sold me a $2000 system for $10000 saying I would get federal and state rebates to cover the cost. Phoenix Arizona

A Green Monster representative came to my house offering a package deal of a solar water heater

including tanks and solar panels. I was promised that rebates from federal and state programs would cover the cost.  The estimates for the rebates were off by a zero for both federal and state $2500 and $7500 instead of $250 and $750. When I contacted their representative, they said it was between the utilitiy and me. then a solar panel was ripped off by a storm, and Green Monster is now unreachable. Unfortunately I am out of my home state til August, so would have to wait until then to send my documents.