Messed my car hooter

Charles messed my Hooter horn with his guys, I took my car there with a working hooter and his guy after taking out my steering and putting it back in again he messed my hooter, Charles telling me it was a coincidence and refusing to account I have proof where he admitted that my horn was working and he will buy me a new one however today story changes he saying it is not his responsibility If you are a female don't use this guy panel beater he is a **** and I want him to know I want my hooter horn come what may he will have to buy it