Worst experience received from Barloworld Toyota Centurion and Toyota SA

I have purchased a brand new 2018 hilux double cab during January from Barlow world Centurion Toyota. My experience was the worst I have ever experience from a new car dealership. This was my first Toyota experience, and I am stunned by the poor sales and after sales experience I received. Even though the extras requested were wrong I was requested to collect the vehicle asap in order for the dealership to finalize the deal before end of January. On collection the finance manager requested me to give a good review for the floor sales man, otherwise he will not receive commission. I was then told that the issues on the vehicle will be resolved afterwards. A few weeks passed without response. In the meantime the vehicles fuel consumption styed below 7km/l or 14l/100km for a 2.8GD6 diesel. I also noticed that the newly app**** rubberising on the bin started pealing off. I have also noticed that the paint application on the interior of the vehicle was of visible poor standard. I had to call the dealership regarding the initial issues and on how they would deal with it...and I also told them about the newly found issues. It is now end of April and none of the issues has been resolved as to yet. I even phoned Toyota South Africa with no success.