Account Payments

I have received an invoice for R1538.22 for the month of July (Which I have paid and have proof) and than I get another invoice for R2293.22. I called their customer care line and 2 of their consultants told me that my payment does not refelect on their systems and the one lady told me it will be processed after 2 working days and the other one said it will be processed in 7 working days? How isit that they are charging me for August month if my internet connection has been terminated and I havent used the data? No one is calling me back with answers. I also tried calling Telkom Direct Hatfielf but their phones arent working! Please help me with these ********. I spoke to the Customer Care Consultant yesterday and she said that she cant see the new invoice that was sent to me, Where did it come from then?