National membership upgraded to Classic (without my knowledge or approval)

I am still recovering after noticing that my membership has been upgraded to classic, without my approval, and am now being charged R1200. Phoned (0860) 200-911 to get assistance. Am good the systems are down and they are not sure when they will be back up, for my issue to be attended to. Seeing that I have been overcharged for over 3 months and they are unable to tell me who authorized the account upgrade…….. ???