Horrible/No service

My car has been at Jeep Umhlanga for over two months, with no feedback on the progress made. When my car was dropped off with an issue of not starting, I was told that the computer box is faulty and needs to be replaced. I had to pay a deposit of R10 000, and the box was ordered. A week later I phoned to follow up, and was told the box will be installed in the week, tested and ready to go. Another two weeks passed without feedback, so I phoned again. I was told that the box arrived late, and they are installing in this week. Another week passed without any feedback or returned calls, and I managed to get hold of the technician who I initially spoke to. Again I was informed that the box only arrived in the week, and they are installing it. Yet another week went by after numerous calls and no call backs, and then received an sms saying that they are still having problems starting the car. So I phone for an update at least once a week, and without fail was told that I will get a call back as everyone is either busy on the phone or with a customer. I even went in person, still with the same feedback - we are still diagnosing your vehicle. I asked if it was the box or not, and was told that it might be and it might not be. Last week i phoned the customer service line, and the lady was very apologetic. When she phoned back with an update, she told me that the service department is saying they are finding one fault after the other. If this was true, why is it taking two months with no answer, and in one week they find so many faults. I am getting no straight answer from either the yechnician or the manager. I use my vehicle 90% for work, and was forced to buy another car as renting a car was getting too expensive. So I'm now sitting with another vehicle that I didn't want, a Jeep with a brand new box that still can't drive, R10 00 less in my pocket, but with no idea how much this is costing me so far as I am not getting any answers. This is definitely THE worst service I have ever experienced. This car will be sold and I will never buy a Jeep again. I will also suggest that no other person buys a Jeep that lives in KZN, as I have not seen one good review for Jeep Umhlanga