Unable to assist with opening an account

I app**** for telkom mobile wireless broadband and communicated with Balungile about opening an account. She said that the application is declining due to an overdue amount of R258.92 and that I must call 081910 to resolve the issue. I called this number and 10210 and both call centres say there is no money outstanding on my name or my Id number. How do I pay money into a non existent account for money I don't owe with no account or reference numbers? I want to resolve this issue and become a telkom mobile client but this simple issue is taking too long to resolve.