Bad Service by supplier

I submitted an ARF on 1 October 2015 about bad service received from Arnold Chats Hyde Park. The dealership received notification of this on 27 October 2015 and were given 10 days to respond. I contacted ombudsman on 14th January 2016 to be told they had still not heard from dealership and that they will be sending out reminders. Surely 10 days is 10 days. My whole car issue has been going on since May 2015. That is 9 months without transport. What is the use of MIOSA if they are not working for the consumer. I am aware that there are a lot of cases but at least keep us updated of what is going on.