Membership cancellation

Cancel my membership ,I went to gym company in mamelodi to cancel my membership end of sept and I was advised that I would have to serve 3 months notice which I did and it ended in dec .Gym company still deducted my money and I don't understand how cz I paid their 3 months notice .Gym company cancel our membership ,everyone can't be complaining about the same thing and we work hard for this money .CANCEL MY MEMBERSHIP