Best Bus Way And Cable Tray Systems in Charlotte NC

I am in a new construction home, built in 2016 with Romanoff being the hvac company used. I have a dual thermostat system and they should have installed a transformer, but they just used a jumper cable, essentially cutting corners. Even the manual for the system says a transformer is required, and they refuse to fix. They also installed our flue pipe with no cover, letting the elements and bird droppings constantly clog our unit, and also wont fix this. If youre the trusted company to be installing hvacs in a ton of new homes, you should do the work properly and by the book! Now, Im out of warranty (not that they would fix it when I was in warranty) and paying hundreds to have this work done by a different company.