Clearly the client is not important

I spent a fortune last year at JSN MOTORS with problems with my car. The last time as I left I felt my steering was funny but they had told me that they had refurbed my rims and I went straight to the closest tyre place who told me no way were my rims refurbed. JSN were not interested they charged me and it was done according to them. I was forced to go back to them this year where I accidentally put petrol in my Diesel engine. I asked them to please allow me to pay 3/4 of the bill and the rest a week after they refused. I then wanted to trade in the car and their Financial Manager was rude beyond reason to me. Saying he had no access to seeing my current finance contract. I had to make the calls to get it. He then managed to get my finance turned down amazingly enough. Interesting thing is I went straight to Lyndhurst Auto where I was prequalified within a few hrs and qualified within 24hrs. JSN are unhelpful and totally not customer service related. They do not seem to value their clients at all. Lastly my ex left his car for a service there. They smashed it and then asked him to pay half. Never in my life have I seen and heard such bad service. I do not have one good word to say