Negligence

I had a claim with momentum on 20/03/2015, it was only processed 2 weeks later after even though i had provide all the required information on my part. The reason is happened is because the agent informed me that they could not locate my car therefore no assessment could be done. Needless to say I grinned and beard the pain of waiting for my claim to be processed and I was extremely patient when another agent named Rasigan took over. Even though at time i was irate, he was helpful at all times and i sent him the receipt i signed for the towing and he finally located my car. It was booked in for repairs and i received photos from the assessors and i noticed a bump at the rear of my car that was not there at there at the time of the accident, the bump is very new this shows that it occurred while my car could not be located. No one knows what happened, and CMC panel beaters confirmed that they received the car with the bump. i was going to let it go since i was without my car for a whole month but when i collected car yesterday I noticed the bump was very bad. I have just paid claim access, I can't afford to fix a bump that i didn't cause, please someone help investigate.