Vodapay app

I’ve been receiving sms’s over the past few days stating that I need to update my details on the Vodapay app, so I followed the insteuctions and logged in and couldn’t get it right, I then called in and the lady showed me how to get support from the app, they called me but also couldn’t get it right, then they also showed me how to get to the live chat, live chat couldn’t get it right, they then called me and still couldn’t get it right and said I must wait until the 14th to see if my app will be blocked, I asked what details did I need to update, no one from Vodacom was sure, I then asked them to change my surname on the app as it’s still showing my old surname, no one knew how to, how does Vodacom have an app that they can’t manage/support? Anyway one question, is it possible to do an early upgrade with Vodacom??