Maaco body shop and collision Messed up the wiring on my new 2015 car with no apologies, worst Customer service Pharr Tx

I went in to get my new 2015 chevy sonic car fixed which was damaged only from the bumper and bottom cover. They told me no damage was done on the engine or inside so I paid out of pocket over $680 just to replace that. When I received the car a week later, there was a flapping noise when I started the engine and my alarm and horn weren't properly working. They told me it was not their fault or problem, they just let me take my car as is, no apologies for messing up the wiring on my new car. Car looks new again but they damaged the wiring in the process, they could of at least apologized. Not satisfied with the way they handled that, honestly would not recommend.