Defective Renegade - No Customer Service

Purchased a Jeep Renegade in June 2015. It has been in and out of Jeep Midrand. It has been towed twice for various reasons. I have sent an extensive letter of complaint to customer care centre - Brett and Cyril attention. I have not received the appropriate response. My complaint is not been dealt at the level that I expect. I had no other option but to lay a formal complaint with the motor industry ombudsman. I sent an email to all concerned advising them of the aforementioned, without a response. I really find it hard to believe that this is the service that one gets after purchasing a prestige brand like Jeep. Utterly shocking!!!! There is absolutely no accountability taken by Jeep to get my issue resolved.