Best Gfci Protection in San Antonio TX

So it was time to replace an AC unit in my home. Evenflow had done good work at getting my old unit back and running before I made the decision to replace it. We scheduled a time for the replacement. It was a 4 ton unit and they charged me $8000. I pay 50% upfront and then 50% when the job was completed. They came out on the day that was scheduled and worked all day to install the new unit. I was well pleased at that point.Then one of the technician said you’re all ready to go sir we are all done. Then I went and stood up on a chair to feel if there was any cold air coming out of my vent and there was not. I said no you are not done. Then for the next hour I waited for them to explain to me what the problem was. Finally after an hour the lead technician told me that one of the wires to the panel was wired incorrectly and he fixed it.They are supposed to come out and finish the job by doing a duct cleaning which was part of the package they sold me.