Incorrect claim submitted by Specsavers Menlyn

I have made an insurance claim on 14 January 2020 on my damaged frame @ Specsavers Menlyn. I was assisted by Daphne. She said that she will contact the same provider of my frame "Polar" to enquire if they have the same frame in stock. unfortunately the frame that I used was discontinued. When she gave me feedback, I had to choose a new frame and the exact precribed lenses which is in my frame will be fitted into my new frame. 20% excess payable by me. I paid the excess and collected my new spectacles on 23/02/2020. my problem was that the new spectacles did not have climate eyes. I called on 24/02/2020, spoke to Rikus regaring the problem, he said he will call me back and 1st need to clarify with Daphne. I returned my spectacles on 1/03/2020, and when I spoke to Daphne, she picked up that the incorrect amount was placed on the insurance claim. My insurance covered for R972.75, and the latest pricing is R1139, but an amount of R445 was claimed??? I specifically said to Daphne that the exact priscribe lenses of my current spectacles are to be fitted into my new frame.... She called me yesterday and informed me that the insurance is expired and that they cannot claim again. in my opinion this is not ethical, I did not submit an incorrect claim. If the correct claim was submitted that I would pay only 20%, which I dont mind paying. I do not want to pay R1139 x 2 = R2278 for Climate eyes if my insured amount was R972.72 x2... 20% payable on the difference R332.56 is what Im prepared to pay...