Telkom billing me for services not used

I am extremely disappointed and disgusted with the service received from Telkom. I have been a loyal customer since and never missed a payment. I signed up for showmax through the Telkom website (as I have an existing contract with Telkom) When signing up on Telkom Website, it advised that I will receive a OTP (one time pin) to my cellphone number. After 10 minutes, I did not receive a OTP and “clicked” again. This happened a third time. (to the same cell number) Only after a third attempt I received a OTP. When I received my Telkom invoice I was shocked to see that I was billed for 3 x Showmax subscriptions on one account. I called Telkom to sort this out, they simply passed the buck to Showmax. I then contacted showmax, who immediately realised the mistake, they conference called me with Telkom on the other end of the line. Telkom simply advised, since I requested a OTP three times and the invoice is already issued, I will be liable to pay the money. When asked if I will be credited, I was simply told “NO”. I understand that I have to pay for one subscription as I used it. But how am I being billed for 3 subscriptions on one account, being one person with one TV in my house? This can be reversed as it is not end of March as yet, however Telkom refuses and refuse to credit my account! I am disgusted to say the least, Telkom taking my money for something they can reverse and for services not being used. I have been a client of Telkom since January 2015, however this means nothing to them.