Glasfit Centurion offers poor service

I registered a claim with a pleasant lady named Gloria and I was so happy with her service I complimented the great service. All hell broke loose when the claim was transferred to Glasfit Centurion, I did not get a call from them as promised, I go a message that I needed to take pics of my car then send it to them, that was done. I then called them to follow up on the claim and the lady on the phone they just received the claim and I asked if they received my request for a Shatterprufe glass and she said it was noted. A week and a half I followed with Miway they then contacted me to apologise and they said they will come in a couple of days cause they only ordered the glass when I complained. They brought me a Benson glass which I refused for them to fit and they were turned away, that was Friday. Today almost a week later they came with an incorrect Shatterprufe glass. Its been over three weeks and im still dealing with such incompetency. I will not pay the R500 anymore can Miway sort that out with your supplier.