Can't top-up my wifi account

I have a cellular account with Vodacom for the last 18 years and have recently taken out a wifi top-up contract. The two contracts are connected on my Vodacom app, but I cannot purchase additional data for my account. I spoke to a gentleman on the 111 number and he informed me that my account was not activated and that he would activate it for me and it would take between 1 - 24 hours to be activated. It is now more than 28 hours later and still nothing . I even purchased a cheap Vodacom cell to try to do it like that, but still no joy