Waiting 4 years for my excess to be paid back

I was involved in a car accident on 17/10/2019. The accident was reported to the police and a claim was put into to MiWay with all the required information. I decided to use my own insurance as it would be quicker than claiming through the other parties insurance. My claim was approved by MiWay with the following claim number C***. I had one call in 2020 fromMiWay stating they were in the process but since then nothing. It is now almost 4 years on and still no excess. I know that the other car was insured and that the details were submitted with the original claim via the app. Surely I should’ve received my excess back by now. To date I have heard nothing back regarding my excess.