Disgusting service and incompetence

I am hoping that someone will be able to assist as no one at gwm roodepoort seems to want to provide any kind of customer service. my car broke down on Tuesday was towed and fixed and returned to me yesterday. I just broke down again with the exact same issue, and when I call in to GWM to speak to them and ask if they can assist as I am going away tomorrow and will now be losing the money I paid as well as being highly inconvenienced. after speaking to John who never bothered to call back when we got cut off and then the manager Jacques, I have been brushed off and told they cannot help and I should accept that I will be losing my money. I have been told my only option is to contact head office in the morning and maybe they will assist as the dealer cant authorise a car, which is not true, they can but they are not willing to pay for it when their delearship is at fault.If someone who is actually interested in assisting me can contact me I would appreciate it.