Nissan Secunda bad service

I purchased second hand Nissan quashqui last year Oct/November 2018 from Nissan dealer in secunda , the following day after purchasing the vehicle i sent the vehicle back to the dealer becouse the in side rear passenger do handle was comming out, after that the vehicle control system on the steering was multi****ioning and I send the vehicle back, I drove my 1st trip to JHB with the vehicle to show my relatives and the vehicle could not open the doors, I had to use the little key on the keys since the vehicle dose not use a key to start and open the door..from that time the vehicle started to have problems with starting and I went back to Nissan Secunda dealership to complain about this matter dey could not resolve it..the vehicle is having noise on the window when you drive it have this irritating noise and I took the vehicle back more than 4 times still the problems not resolved..the radio when u play CD or USB it switches to FM it self and I complain still not resolved..the left door rubber was cut off and the dealer ship used glue to fix it instead of replacing the whole rubber and that is an insult for Nissan car that I am paying over R6000 a month..I complained and car still not fixed..last time I was driving home and plastic that cover the engine fell of and the dealer took 2 weeks to fix it, now the car when u drive, you need to drive with ambrela becouse when u drive in the rain water comes or starts it rains or water comes in and u get lots of water under the front passenger matt ..last time I complained to manger and told her that this car got too much problems in December the whole cluster light and radio stoped working, when your driving worning lights always come on..after I spoke to manger she made me , the second hand mangaer and workshop manager to seat down and write all the complains on the list for them to solve..believe you me..they took my car for more that 2 weeks but the same problem still there..last time I was stuck on a robbort and other motorist we busy hooting at me as I was stupid becouse the car did not want to start..lucky I was close to the dealer and when car started I went to the dealer and finally the manager she agreed that she will get my car replaced..I told them I want similler vehicle on similar price range for affordability and the told me that in 2 days I will get response from them and that was Wednesday .The following Tuesday I went back to dealer to check what happend with the other car becouse I was fed up with this car and they told me that they have found a car for but it was too expensive and it was not a sport pack like mine..they wanted to give me a standard vehicle..then I refused to take the vehicle..then I told them that they must try to get me another vehicle asap and I am also looking..the I got another vehicle somwhere and I tried to take the Nissan back to the dealer now they refuse to take their car..after all the peciance and pecerviarence i had with the car..now I don't have have space to park the quashqui and I have to pay to instalment while they have failed to fix the car.

I need some assistance or what I must I do to get the dealer to take the car back..as for now the car still have the same problem and I got videos and sms that i was sending to nissan secunda manager to support all my information. Its only plus or minus 4 moths with the vehicle but it already went in for repairs more than 20 times. Regards

REUBEN