Disappointing Service

I went to Renault Clearwater today in order to inquire about a part for my car. I have had the run around with a mechanic (not a Renault mechanic) who stuffed up my car. All I needed to complete the restoration of my car was a simple piece of fuel line pipe. When I arrived I walked through the doors and not a single staff member was at the entrance to direct me. A very nice gentleman from the workshop spotted me and asked me who I would like to speak to. I told him that I wanted to speak to the parts manager to buy a part. As we walked through someone asked me if I was sorted and I said I was following the gentleman. He said to the gentleman "Make sure she is here to spend lots of money". Clearly this is the attitude they have at this branch. Please read on as to why I say that. Anyway, I speak to the parts manager. He doesn't try and understand exactly what I am looking for. I don't know the technical terms but he's already made up my mind he can't sell me the part I am looking for. That the fuel line system is extremely complicated and he needs to know which pipe I am talking about. Bear in mind he is a salesman and not a technician. He said he can't bring in a technician to speak to me. Had a technician come I am sure he could have told me what pipe I needed and I'd be on my way. Instead the parts manager told me the best would be for me to bring my car in and have a diagnostic and they can fix it from there. I don't need a diagnostic I can physically see where the fuel is leaking and what part I would need. He further told me it's not safe to drive my car and if I drive it and it's leaking fuel then It can cause a spark and go up in flames and then I'll be sad because it will be my funeral. This is extremely upsetting because this is pure ************ to get me to spend unnecessary money to have my car diagnosed when all I need Is a simple part that my fiancé can fit for me. I am disgusted in the attitude at this dealership and they clearly are out to rip the ring and make money. Do not support this dealership.