I am very disappointed with the service

I am very disappointed with the service. My car has been at the approved repairer for 3 weeks with little progress. It is still not straightened or painted — only a control arm seems to have been replaced. The repairer keeps saying the car is almost done and only the mag is outstanding, but when I inspect it, this is clearly not true. I reported this to Budget Insurance and was promised feedback within 24 hours. When I followed up, they repeated the same incorrect update from the repairer without verifying it. When I asked for escalation, I was transferred to another consultant who repeated questions and told me to contact the repairer again. This is not a resolution. There is poor communication, no accountability, and no urgency in handling my claim.