Telkom terrible service

A sales lady called me from telkom, early May 2019 wrt a wifi router uncapped deal, it sounded so good I agreed on the deal. She also told me there is a cost free cancelation policy if you cancel within 7 days. I receive the router in June and decided to cancel the contract as I had 7days to do so.

The router was piked up again by the courier but telkom is not stopping my contract with them. What's the use they have a 7 day return policy but they can't stop the deal. I don't have the router anymore and they are taking my money from my account every month, this without my permission.

I'm truly frustrated as people warned me of telkom but I never listened and thought I could give them benifit of the doubt.