Most Pathetic service ever received from Mahindra Rustenburg

Absolutely pathetic service received from this dealer. My engine was redone/rebuilt by this dealer. I got this bakkie back from the dealer around the 20th of May. Since I got it back I got stranded twice. In the last 2 weeks. The first time it broke down was 15 June. Where it was found that the one injector jumped or popped out. I was told that I need to fix this at my own cost and they will refund me. I sent them the invoice but they still haven't refunded me. It was also found that my engine mountings are lose and not even tighen. On Sunday 23 June I got stuck again . This time a different injector popped out. The quality of service that was given to my vehicle is revolting. Christo and Hubert refuse to help me. It was said that I had a 3 month warranty on this engine and this happend not even one month in. I was advised that this is not their problem anymore and that I can go to social media and ombudsman. This afternoon my bakkie started overheating as well. I do not know what to do anymore as these people are not assisting and I have been blocked by them on whatsapp. When I phone the dealer they advised that they withdraw from me and that they can no longer help me. Between Auto Investment Rustenburg and mahindra Rustenburg there is some serious ***** workmanship involved.