Vodacom online is a ****

I urge people that they must never take an online account with vodacom after you have requested online they do call you to confirm they have received your request to a contract, I confirmed with them that I need a top up contract but because they agents **** individuals for a commission they've made my contract an open line without me knowing, I realize this when I call them to ask why they didn't debit for the month then they explained without me knowing. Then I asked them to put it back to top up as I still need the phone for my brother as they said I cannot cancel because of the 3 months grace period. Then the other agent said they will lock it until 3 month then I can be on top up plan but no she didn't every month the account keep increasing am so disappointed on Vodacom as it the Big network in SA their agents **** people for commission