Telkom ******* upgrade

I have had my Telkom wifi router more than two years, i installed the Telkom app, went in to check how long before i can upgrade, only to see that i have upgraded 3 mnths ago. ***!!! I sent a email to Telkom, received two calls to try and sell me fibre data, but no one responding to my question as to who authorised the upgrade on my contract. Telkom i want an answer!!!