Appaling service from InspectACar Pta North

On 26/09/2017 I bought a Hyundai IX35 from Sietse Pretorius car salesman at InspectaCar Pretoria North. He delivered it at my workplace in Potchefstroom. The first thing I did was to have a look at the manual and service book, it was nowhere to be find , I ask Sietse about it and he told me maybe the garage that did the 120 000 km service has forgot to put it back in the car. He told me he wil sort it out which I accept. The moment I climbed into the car to take it for a test drive I heard a banging noise as soon as I reversed or pull away, I immediately told Sietse who also heard it , he told me to take it to my local garage , get a quotation and they will pay it , because he thinks its something minor. He also told me I have a 3 months warranty from them as well and a 2 year extended warranty that he also included in the selling price of the car . The left front window switch also did not work. The next week I took the car to my local workshop who told me it is the rear suspension arm bushes, the total quote for the bushes and window switch was R 6696.36 I emailed it to Sietse and the dealer principal on the 3rd of October 2017. After several days trying to get Sietse or anyone to give feedback a Johan phoned me back and told me the quote is way too expensive they will get the bushes themselves come and fetch the car and replaced it. I phoned almost twice a week to find out when will this be done , and the answer is always the same , there are no stock anywhere in the country , Why don't they replace the complete arms that is readily available ? Today is the 13th of November I have not received the Service history book , the extended warranty booklet , the registration papers or the license disk . Every time I phone there is another excuse . The before service was excellent until the car was delivered, the after service .......appalling to say the least.