Pathetic service at my cost

I'm not happy at all with this dealership. After 2 months of waiting for them to deliver a car I canceled the deal. When I request a cancelation they held me at random insisting I proceed with the deal.They offered a replacement car of which 2 weeks later they still couldn't deliver. I did a follow up on the cancelation and they told me again I can't do a cancelation because the car is considered as I have taken delivery. Its ********* to say the least. Not only are they holding me random. But I can't apply for another vehicle elsewhere because they insist I have to take the car I've been waiting since 28 September for. The more I try to cancel the deal the more they push the deal on me. It's now 4 December.