Pathetic service and big crueks

Vodacom with its pathetic service and *****ing other people's hard earned money even this month I will suffer financial loss due to their failing to cancel the extra data purposely cause I told them I just want my contract to be migrated back to my original contract and I repeated told Ndzhaka(their advisor) that I don't want any extra data and funny enough we were speaking isiXhosa so I am very much aware what I said but to my surprise today when I was checking my balances the data was loaded.. I repeat Vodacom I do not want your pathetic data with your pathetic network. Just cancel the damn data why is it so difficult to do that.