Showmax voutcher

I have subscribed to Showmax on Telkoms website on the 28th of July 2019 and still have not received my voucher to activate my account. I have called several numbers and they always direct me to another number to call. Nobody seems to be able to help me. Also a message on Facebook messenger was unanswered. yet the have billed me for the whole of July and August for the service that I cant use. My account number is ***. Can someone please sort this out for me.