BAD SERVICE

I am very disappointed in service received from Hyundai branch in Plumstead. 3 weeks ago, we took our car in for a service, 2 days later our car made a funny sound contacted the branch and told them what we heard, they told us to bring the car back, however the car would not start! Our car was towed from our house, 3 weeks ago! Every week we get told a different story, the engine has to be replaced etc.. and at the end of each week our car will be ready, as of today, we still have no car!!! The worst problem is that my husband is in sales, so right now, he cant do any work! Are you Hyandui going to compensate salary loss??? I message Hyundai SA, asking to please provide us with a curtesy car as this problem of the engine was their fault and they need to help us with a car, no response. This is not the greatest of services we expected from the car dealership. Hyundai - You tell me how you can help?????