Horrible service multichoice must shut down

I am so annoyed with multichoice, I don't know if this is how they trying to make money since they loosing customers.I had a decoder back then that had been ****** from where I was renting. So I recently bought another one last year late and I subscribed to compact package and everything was fine all of sudden there's 2 decoders appearing under my name.I told them to cancel the other one because it was ******.Then come Feb I downgraded to TV access .Last week my son noticed that the TV is playing all channels and I thought it was some sort of special and now month end now I owe dstv thousand something for something I didn't subscribed to .Multichoice must just close because they're useless. I called them several times and told them to blacklist that other decoder but it was not done.What a ****ty service because now showmanx doesn't have SABC 1.They must just close down because they can't keep their customershappy. Or is this their way of ****ming us I'm really angry