Worst dealership to deal with

I have purchased a car from them in September last year and since then I have had endless problems. .it's now 9 months later and im still waiting for them to fix a defective head light which was sold to me with the vehicle however I am experiencing endless problems trying to get them to fix the head light. I still await extras such as the back board and spare wheel which also hasn't been provided yet. Salesman as well as the manager don't answer my calls regularly or provide feedback. Worst service ever received from a dealership.