Cancelled policy debiting double the amount

I am soo mad right now, 3 weeks ago i cancelled my policy (3months policy) and the lady who was helping me at Lephalale branch did not even bother to cancel it, i went back on thursday after they deducted double the normal amount, even when i have cancelled my policy, they promised to cancell it and reverse my money, but tgey did not, yesterday i went back for follw up , only to find that the lady did not bother cancelling or refunding me, i am soo disapointed and i want to cancel the educational plan that i took for my kidz, i have never seen such bad service....