FNB BAD service on their Auto populate Fields when Buying prepaid Electricity!

I recently tried to purchase prepaid electricity on the FNB app, i did not click accept terms and conditions and it then gives you an opportunity to Edit your purchase, what you don't see is that the Meter number changes so it's not the details you originally added. I have recorded this via Video....

When I contacted FNB via Secured Chat the shrug it off and say there is a disclaimer there saying you have to confirm details. However why does it not only revert back to the last meter number you used, SURELY this is now FNB's issue because there is also NO WAY to delete old meter numbers. Now I have bought a months Electricity for a previous Flat I rented???? I will not accept this as this is surely a Glitch in the FNB app automatic settings and NOT me as I opted to EDIT the transaction I was in not go back and start again.

I an sure this contravenes with the CPA.