*****ing my money

I called vodacom to query my debit order i have been debited R1258.27 instead of six hundred and something. Im calling Vodacom and i get 3 different stories from 3 different people. Can someone who knows their job call me and explain as to why am i debited this much. this is incompetence at a high level. You all can see the that im over debited but no one is able to explain why.