Pathetic Service

I am very disappointed at Nissan. I've got a Nissan Xtrail I bought in 2015. I've always been servicing my car at CMH NISSAN DURBAN since I bought it. They always come up with stories when you send your car for service, they make sure that they come up with stories just to create an opportunity to reap the customer off but they never got a chance with me. My car had a problem with clutch on Monday(04/11/2019) and I had to tow it to CMH Nissan Durban. Before it was towed in, I phoned them for a quotation in replacing a clutch, the person I spoke to said that the clutch kit is R4200 and the labor is R6000, therefore the total amount would be R10200. Even though I was not happy with the labor fee, I still sent my car to them. It was around 12h00 I left my car. The following day(yesterday) nobody contacted me, I made several calls and the person that is assigned to my case - his name is Lesley - kept promising to come back to me but he never did. I tried again in the afternoon I finally got hold of him and he told me over the phone that the fee to do everything would be R25 000. When I asked him why, he then told me that they also need to replace a flying wheel which is +R9000. I told him I cannot afford to pay that amount, I will have to tow my car to another provider, he then said to me that he will double check to the technician if they need to replace the flying wheel. He than phoned me to tell me that I don't need to replace it. The fee was still above the fee I obtained from the initial quote. I asked him to come back to me with the correct quotation. He promised to phone me today around 09h30, I am still waiting for his call. When I tried phoning him now at 10h45, I could not get hold of him. How can I trust these people if they treat their customers so bad. It is pathetic. I mean firstly he gave me the wrong quote just to try his luck with me, so they can reap me off. Nissan Durban are ******. I am so not happy with their service. I am actually ****ed. I don't have a car as we speak. I had to hire a car and I am paying every day. They don't care.