Shurecheck and RVN is a complete mess - cannot use internet banking any more

I was "Upgraded" to Shurecheck and since then I cannot use my internet banking for anything other than look at funds that I cannot access. Seeing as I am based in the UK, I requested to be downgraded to the RVN system again so that I can use my internet banking along with verification numbers via email. This request has been pending now for weeks despite countless attempts, to have it resolved. I had it escalated via the call centre, I have written countless emails and spent hours on the phone without making ANY progress. This is by far the worst customer service I have ever come across. I am appalled at Absa's inability to solve a very, very simple request. How difficult can it be to change my USSD status from "Y" to "N"???