Get your **** together Telkom

I was debited R1 155 on the 25th of August, accounting for the month of June that I had in arrears and the month of July paid in advance (that was supposed to be debited on the last day of August). I called in to make sure I was going to get debited twice for the month of July since it had already been paid and was told no. However I got my invoice and the amount of R1155 is still owing and I'm set to be debited just under R 1962.94 at the end of the month? Please account for the money that was already debited from my account on the 25th of August. I've called in multiple times since I got my invoice and I'm just left on hold till the line drops or I run out of airtime. Your online chats never have any agents available and the dispute option on your website never works either.