Vodacom charges Top Up contract with out of bundle data

I am now properly fed up with call centres. I opened two 1 Gb contracts for may grandsons in July. #Vodacom made a mistake when they put the two top up contracts on their system and then charged me out of bundle data rates. I was charged R1842 out of bundle data rates on one contract in August, R1842 on each of the two accounts in September and R1842 on each of the two accounts in October. I first contacted them in September regarding their mistake and the charges. Every time you phone you spend almost an hour to explain to this agent who then passes you on to that agent who refers you somewhere else. Then you get a reference number and a promise the issue will be resolved in 7 days. You leave it for 10 days and then phone again same story. Why is is you never get to speak to the person they speak to, when they put you on hold while you either listen to ****ty music or deadly silence. #Vodacom you suck at customer service. I want my R9210 refund.