Unprofessional service delivery

I have purchased a vehicle from Group 1 The Glen in February. I hardly HD the vehicle for about 2 weeks before we started getting mechanical problems. The vehicle was ultimately returned to the dealership and Group 1 Alberton did an investigation and decided to cancel the finance. This was in March Already. I am not getting anywhere with the dealership not am I getting feedback from them or the Ombudsman in regards to this matter. I cannot do anything before this is sorted out completely. This is very UNPROFESSIONAL SERVICE.