Hyandai Bedfordview- Turbo issue on car.

We bought a Ford Fiesta from Hyandai Bedfordview last year in May 2018 for my daughter. We took the car back several times with a turbo problem.The turbo was replaced 7times by a Ford Dealer on behalf of Hyandai.We requested a refund or another car. We even went to MIOSA Still waiting for this to be finalized.No reply from dealer to MIOSA as of today''s follow up.In the meantime my daughter cant even rely on this car. We would like this matter to be addressed asap.