Wrong Sim Card was upgraded

Telkom's Point of Sale called me to upgrade my router package but instead my phone package was upgraded. When I went to the store early to upgrade my phone, I was told that it was upgraded and I therefore requested a cancellation. A lady called Simone Semantha Delo (S) called me on 30 September and she said to me that she can upgrade my phone and need to send my address which I did. She called me back on 16 November to finalise the order and told me that I will receive it between 3 - 7 days but never received it. I called 081180 and I was told that no order was loaded into my account and that the wrong contract is still active. I called again today and was advised that I need to call Telkom's Point Of Sale to rectify the error since they are the ones made it...when I called them they told me that I should have cancelled it within a month....but the lady said she logged the issue so that it can be investigated.

I can not pay penalty for the mistake I have not done. I am very disappointed with their service. This issue could have resolved very sooner and as a result I am paying extra R500.00 for their mistake.