CAS Financement review: I need my bumper fixed 2

So I've recently bought a new car from CAS financement and it's been nothing but trouble. I had to bring the car back the first week because of an issue with the muffler then I had to go back down because they didn't have winter tires available when I originally bought the car. Now today I had to visit them again because of they garbage body work they did on my bumper had a spat with the sales guy there because they don't seem to understand people lose out on they're pay when they have to keep wasting time to come see them and his response was he isn't going to fix my bumper now. Full bumper to bumper warranty and this guy is telling me to fix it myself.