Poor customer service

I have fiber with vodacom month to month that is up to date , last month June I went to i store to open phone contract , gentleman informed me that it gives them error that says “The customer already exist on Epix system not allowed to create a new account, I was told to go to Vodacom they will fix it , when I get to Vodacom store the lady told me they never seen such I must contact fiber directly, well I called fiber customer care they also denying until another guy requested to log ticket but still nothing instead I’m being told that my account is up to date there’s nothing on their side , please advise I’m so annoyed right now no one is assisting and I need a phone