More damages to my car but claim closed and finalised

I had and accident and I was towed by road assist from naked insurance. My claim was approved and mini maxi was assigned to fix the car. The panel beater fixed the damage on my car which was in front when I collected my car I noticed that my back bumper was damaged. Panel beaters showed me the pictures when they collected the car from SMD, the back bumper was already damaged. The damage was not there when I had the accident. I’ve reported this to naked insurance and I was told they will investigate, it’s been weeks and I’m sitting with a damaged car and my claim has been finalised and closed on their system.