Change of Greenbacks username

It has now been a month since I have logged an escalation via the contact centre to have my username on the greenbacks portal changed. After me following up 3 times and being promised call backs twice as well as having a consultant claiming that his senior has expedited my request and will feedback to me. I still have not received any feedback on my problem and it has not been sorted out. Even beep bank seems to be more competent than these bunch of idiots at Nedbank. A month and more just to change a username.