Still being Invoiced after service is cancelled.

Yet again you guys cannot do simple tasks. I cancelled my phone line, DSL and dsl data on the 22nd June 2015 as I switched to Telkom Mobile LTE-Advanced packaged. The sales person mentioned it will take a month for cancellation to which I had to still fork out for the month of July even though I didn't need the service as my LTE-Advanced was already activated on the 22nd June. I called again beginning July to confirm that all services related to my Telkom phone line including DSL and the DATA was IN FACT CANCELLED and the operator confirmed that this will occur on the 22nd July (arrogantly).<br> I have paid all invoices up until 22 July and now I am being charged for DSL subscription, Usage, Phone line and SoftCap for the month of August. Why am I being charged for this when the service is completely cancelled and not in operation! I have the reference numbers SMS'd to me to say that this service was cancelled on 22nd July but I'm still being invoiced for August.