I bought the car with them 16 December 2020, upon my sale I was promised that the car has service plan and will also have warranty

I bought the car with them 16 December 2020, upon my sale I was promised that the car has service plan and will also have warranty. They also did not disclose to me that the car was a write off. I happened to have scratched the car and they fixed that saying they are apologetic for having **** to me. But promised to get me warranty and that was August. I have since spoken to them then, am driving this car with no warranty and service plan and they promised to revert back to me but to date nothing