Consultants uninformed, misinformation

I got contract with vodacom, they debited but money was returned kept calling them to find the issue, the agent said they had technical issues and i had to pay R108. I eventually made eft, and ask to be on cash payment and i was told it went through. Following month made eft but they debited again money was returned again charged R108. I called, the agent said no it shouldn't have happen they will dispute it i should wait for the new invoice it will be cleared since am now on cash payment. New month they said my acc is on arrears. I have called so many time and spoke to few agents/consultants they told me to wait when i kept recieving these sms R108 on arrears. Today i callled again the agent said i should wait for 6 months to be moved to cash after i have spoken to few consultant no one mentioned that. Am so not happy with vodacom this will definitely be the first and last contract with them.