MIOSA UNEXPLAINED CLOSING LETTER

I logged a complain with MIOSA regarding Daly Ford Klerksdorp. my car was in for service in June this year and on the 11th of August I encountered problems with the car. when I took the car in for service I personally asked the dealer to look into the air con as I wasn't satisfied with the sound of it, when I collected the vehicle I was assured that everything is in order and some parts were replaced. on the 11th I was told that the car had a problem with the air-compressor and some of the parts that were replaced had to be purchased again. the dealer refused to take responsibility for the parts warranty and asked me to provide them with proof that I asked them to look into the air con matter in June and is their word against mine in this matter. I then decided to take the matter to MIOSA for resolution and I was so shocked when the closing letter came in and said they cannot hold Ford liable for my problem. There is Consumer Protection Act 68 of 2008 Section 56 subsection 2 and Section 57 subsection 1 that was overlooked and as a consumer my rights here are not taken into consideration according to the said Act. According to my understanding after reading the letter from MIOSA, are they saying that every car dealer has the right to ******* their clients as they please knowing that they wont be held accountable for their stupid mistakes? does the dealer have rights over their consumers as I was told with an attitude that its FORDs word against mine and truly as things are they have got away with it.