Poor unacceptable service accounts payable not transparent at all give you false balances

I am very dissapointed I downgrade last month and 2 consultants give me an amount payable to paid to reactivate my service. I did pay the outstanding balance. This morning when I woke up my service was off but my payment due date was the 6. I am on the family package but they charge me almost R900. I did ask where they come up with that amount they told me I made short payments the past months but I pay at ShopRite and they give your full amount outstanding and I received it via SMS why would I pay odd amounts and ShopRite give you the full amount outstanding. How can I pay now reactivation fees but account is only due for payment today. I did understand the extras for the movies but I am not happy for short payments I made I paid what they told me but now I made short payments but it was not add on my account payable. Not helpfull at all and give false amounts they tried to bleed us.