Not acceptable

I have a Megane GT 2015, bought in April 2015 and 3200km. In September, no prior warning signs, I could not change gears. I had to have the car towed to the nearest dealer. Gilbert assisted me, the 1st dissapointment was when I got a call to say the guarantee will not cover the costs as the clutch was burnt out due to negligent driving, really! I drive in suburbs with no real traffic. I got a quote of R21K which was authorised as I need the car for work. On 8/10/15 I spoke to Gilber again who advised the parts will be ordered, so when the autorisation was given the can commence with fixing the car. Authorisation was given on 15/10/15, the next day I called to find out if all was in order and I got told the parts are not available in SA and needs to be brought from France, this could take up to 21 days. I have called again today to enquire and all I get told is your car will be ready one after we receive the parts, the date which they will receive it they do not know. I am horrified firstly with the guarantee and 2ndly being told they cannot tell me when I will get my car. I need my car and this is the last time ever I will buy a Renault. I will never recommend them to anyone.