MiWay Bad service

I logged a claim with Miway insurance after my car was damaged. [***]. They took my car and they said they were going to assess the damage. The car was gone for 3 weeks for the assessment and after the 3 weeks I was told the claim is rejected because the damage was mechanical. When I got my car back the front passenger window was open and dust had gather in the car, the car battery was flat and I could close the window or lock the car. I had to charge the battery myself. I also discover that the cover below the engine (Engine Splash Shield) was removed and not replace, probably when they were assessing the damage. Now I have to buy the cover myself.