6 months struggling with July's cashback

I have been struggle for 6 months now to get my 50% cashback on my fuel spend for July 2020. When I got the email with my fuel spend and driving stats for July it said 0 for fuel spend and 970 drive points. When I queried it they said that the fuel spend wasn't recorded and I should email them the slip of when I filled up my car. I sent it and got an email that it was received. After a month of no reply I emailed again and got an email back saying "that there has been a system error regarding the payment" and "will advise once the matter has been resolved." Another month went by without any feedback, so I emailed again and got "we have followed up with our system department to provided us with feedback". 2 weeks later I emailed again and got this "Please be advised that we are still experiencing an error with the July 2020 cashbacks, our Systems Department is working on the error". A month later without any feedback and I emailed again. This time I got this message back "Please note that as per systems the July cash back rejected as the unit was faulty. A faulty unit does affect the recordings of the trips and as a result affecting the cash back.". So we went from my fuel spend not being recorded, to a system error regarding payment to the cash back rejected as the unit was faulty. How does that work? I had 970 drive points on my July statement, so this is just a reason not to pay me the cashback. It is pathetic how I had to contact them every time just to get some feedback regarding the cashback and then in the end it being rejected because of a poor excuse of the unit being faulty. I even asked for someone higher up to contact me to sort this issue out, just to get an email that the issue was escalated to the Systems Department and that I will be assisted within 48hours, which as you can guess never happened and that is why I'm turning to Hellopeter to get this sorted.