Frustrated and annoyed with service delivery

Extremely unhappy with their service, had an accident in March 2023 and I still don't have my car almost 4 months later!! The service provider, Wynberg Autobody, continues to duck and dive, is always unavailable, is not trustworthy.....while I sit here, frustrated and annoyed, needing to spend money I don't have on car hire!! It has gone on long enough, I get the same story from Outsurance call centre agents almost daily, at what point does management escalate this further and get my car removed? Very unhappy, disgruntled client!