Bad service

I called dstv after noticing that they dedicating more then they should and I was then told that I subscribed to showmax and I clearly explained that I didn't. Then they said I must try logging in to showmax which I explained I do not have the login info as I didn't subscribe one week later I call to find out that I'm still going to pay for showmax and I asked thm to please cancel. Yesterday I spoke to one of their agents and again it was a waste of airtime and time as I was not assisted. How am I supposed to unsubscribe if I don't have the login details? Dstv is just ripping me off nje