License Disc

I have received a Final Notice in the post today stating that my license disk was not displayed in the windscreen of my vehicle. I have renewed my car license on the 19/082021 at 09:53 at Promenade Mall in Mitchells plain. My disc is on the right side of the vehicle. I have attached the notice I received of R500, as well as proof of my License renewal document and a picture of the license disc on my windscreen which was placed there on the same day as the renewal date. If an officer has pulled me off to check he/she would have seen the disc on the windscreen. which means some office is not doing their work properly. I would like this sorted out as soon as possible, please.