Complaint about a used vehicel I bought

Good morning, This serves as a formal complaint against Imperial Select at the Glen. I bought a pre-owned Renault Step way 2016 Model from this franchise on the 27th of September 2017. The salesman that assisted me was Johnny Monchwe. To say I am disappointed in the car and the service I am getting is an understatement. Upon receiving the car I traveled to the Eastern Cape. When I arrived the first thing I noticed was that the front tires weren't really new. I alerted Johnny about this and he promised to call and we would fix upon my return but he did not. A few days after I got the car it rained. The car was locked; I woke up and found a puddle of water on the passenger side of the car and on the back. I alerted Johnny about this and he said he would look into it upon my return. I spent a further two weeks in the Eastern Cape. It then rained again and once more I woke up and found water inside the car. This time around the hazards kept going off, the alarm system switched off and this resulted in the battery dying and a foul smell in the car. I had to call Renault assist to get the car jumpstarted before making my way back to Johannesburg. By this time, the alarm system wasn’t working and I had to sit in a puddle of water while my friend drove us to Joburg. What I then noticed after this water incident was that the petrol tank and gauge had now become problematic. 10 kilometers worth of petrol would disappear in about 5 minutes; this meant that I had to fill up more than once for my trip back. I got back to Johannesburg and infirmed Johnny about this. He took the car and fixed the alarm system which had been damaged by the water and said he would service the car. The car got service, however, the petrol gauge and tank situation is still the same. I drive about 5 minutes from the garage and the car would tell me I have 240kms to go when I get home which is 5 minutes away it would say I have 230 kms. I am disgusted and disappointed at Imperial Select because clearly, this car is faulty but it was sold to me as though nothing is wrong. In less than a month with the car it has had to be taken in 3 times and that puts me in a position of a disservice as I have to find other alternative means of getting to work. As I write this, the car has been taken in again and I have had to find alternative ways of getting to work. I do not want this car. I would like to return this car or get another vehicle for the same price. I am paying a lot for this car and if I am getting issues with such major things from the onset then I shudder to think of what the next 5 years with it will be. I would like a response from Imperial on this and get another car that is functional as I did not buy a new car to be stressing about these things. If this doesn’t get resolved I am taking it up with the lawyers and informing the Ombudsman. Thank you, Miliswa Sitshwele (Miss) **********