Bad service

It's almost 3 month since my car went in for repairs following my not so serious motor vehicle accident. I'm not happy with the service provider chosen. Firstly some of my valuables went missing, I reported, since I got the response that the matter was escalated. No feedback to date. The consultant responsible for my claim gives me feedback when ever she feels like. It's been almost, my car is at stage 11 of repairs . But everytime there's conflicting feedbacks. I'm really ****ed off now . I just need my car. On the 6th March received a message saying all parts will be completed. Whatever that meant. Why can't I get my car?