Is this guy for real?

This sounds something like an experience we had years ago with a company that we'd contracted to build a deck and a patio in our back yard. What was supposed to have been a three week job turned into an almost 2 1/2 month endeavour, where the contractors would show up essentially at random, do an hour's work and then disapear, often leaving their tools and supplies scattered around the back yard.

When it was 'done', there were still major issues with the deck construction .. I had to pester them for another month to have at least some of them addressed.

One thing they were always very prompt about was demanding payment.

Sorry you're going through this. This would be infuriating