Vodacom account

I called in July to settle my vodacom account an SMS was sent with the details and I settled my account same day and I called after 7 days requesting for a paid up letter and was told the payment is not showing and was told to send proof of payment and I did I have been calling since then still the payment is nt reflecting the reference number and the bank account is the same as the one they keep repeating when I call so today I called again and I explained my situation to the agent that was helping me and she told me the account was only handed over in Dec