Car bought from Avis car sale , brokedown

In April 2015 I bought a vw polo from Avis car sales in ferndale. In February 2016 the car broke down In the middle of the highway. The cR was serviced 3 months before this. It is still under service plan and warranty. I called them to report the car broke down, and what must I do. They said I must report it to vw. On 10 March 2016 I reported it to vwsa. Up to today and after I have to keep following up with vwsa , I don't not have an answer why the car broke down. They have not even answered my requests. I don't know if and when they will even fix it.<br> Avis car sales just referr d me to go,to Vw. I a not happy with this as they sold me the car in the first place.<br> For the last month I have to fight with vwsa, and Avis car sales did not help,once. <br> As I bought the car from Avis cars sales, then I want Avis to,sort this,out, or Take back your car.