Still waiting

How on earth did Vodacom get to the amount they refunded us for the ********** upgrade as the deductions were for R679-00 for two months - and I am not even sure if it will go off again this month, while I received just over R 1000, and have not even been able to use the data card in the ****le as it was changed from a data package to a voice contract. I was promised a copy of the account statement by the agent who contacted me and - surprise surprise!! - I am still waiting. Please provide me with a copy of this so that I can also understand the mathematics app**** by Vodacom in this case!!