Bad service

I bought a new car, Renault at Cater in Melrose and received my car on the 26th of September 2022. I was promised to have my license disc by Thursday or Friday the latest. Till now I have not received my number plates and disc. Now they are telling me the process takes about 2 to 3 weeks and this was not communicated to me. When I app**** for the car I told them I need everything to be sorted by the 1st because I'm going to use the car for business purposes. I'm so disappointed and no one is helping me sort out the situation. Can't even get a manager to help me or even call me back.