Complaining about the service

Last year in July i called Mercedes-Benz SA for assistance with my vehicle, my vehicle stoped at the fuel station after i pour fuel. I waited for 3 hours in a very cold wearther for the tow truck to arrived. The car was towed to Mercedes-Benz Rosebank. The next morning i went to Mercedes-Benz Rosebank to check my vehichle and i was told disturbing news that the radiator on the front bumper was spoilt. I was also told that Mercedes-Benz motorplan was not going to pay to fix of my vehicle. The service manager claimed that the gentleman who came to assist me on the day i had a problem with my car spoke to my husband and my husband mentioned to him that he heard the noise in the car when he was driving. That made them to conclude that the radiator problem in the vehichle was an iccident. As a loyal Mercedes-Benz client this is the first time ever i had to claim for this kind of service. I have been driving Mercedes-Benz for many years. When i purchased the motorplan i was not told about this issues. The treatment i received from Mercedes-Benz in Rosebank was very bad. My vehicle is been at the dealership for 6 months reason being i have to pay R10200,00 to realise it and i dont have that kind of money. I have been reaqusting for the dealership to meet me halfway to resolve this issue and no one is willing to assist. The manager from the dealership went as far as threatening me by saying i will be charged a further 250 cost a day if i dont come and collect my vehichle. I have contacted Mercedes-Benz SA to try to get some sort of help but no one is willing to assist me. I have been very stressed about this issue. The radiator issue was not an incident, the radiator is placed on the front bumper and the front bumper of a CLA 4matic is very low. I really need this to be resolved amicable. Im not happy client at all.