Verbal diarrhea

I'm not happy with 2 particular guys that were very rude towards me. The first one (black guy) was extremely rude we even argued before he could even test the car, I had to remind him of the warranty and the fact that I paid. I come to you with a problem and you tell me there's nothing wrong with it before you could even test it. Then he came back never said a word to me then gave it to the other one (tall white guy) who actually ****ed me off, he was sarcastic asking me if I use my brakes to stop the car, what could I possibly use? My finger or my pee maybe? You don't talk to customers like that at all, imagine do you use your brakes to stop? What on earth? Is that how car service city staff supposed to address customers? That guy is extremely rude, infact both of the more especially the sarcastic one, infact he disrespected me and insulted my intelligence. Then came the Manger, I was happy with how he explained everything to me even demonstrated if the car had a problem what would happen. But the sarcastic one needs to be reminded or taught how to address people, people who bring business to you. You don't need such people in business. We all work with people and know what we specialize in, don't come here and ask me if I use my brakes to stop the car, what else would I use?let's not have verbal diarrhea, that's total disrespect that I got from that guy. Total disrespect!!!!