End my wifi contract with Telkom!!!

I took a contract in 2017/2018 they had a promotion on router with 10gigs for R99. In 2020 I tried to cancel my contract been send from Peter to Post. They are renewed my contract without my consent. Went to the branch told to cancel on website I did. My premium is just going up every year. Can I please be removed from Telkom I'm tired of been taken advantage of.