Billing issue - Consumer Complaint for Vodacom - Head Office

My cellphone contract was suspended and we made arrangements to pay R715 for four months and they told me there wil be no invoice or billing and allocations until the full balance is paid.my first arrangements payment was on the 31 of March I paid R761 but on the 4 of April I found that they billed me again of which was not part of the arrangements and I have been calling but no respond and I’m thinking of recalling my money from my bank because you breach part of the agreement