Fed of Vodacom *****ing my money

As usual Vodacom is *****ing my money. If on 25 oct my contract was reinstated to the same amount I paid total when wanted to cancel am getting it means I'm suppose to get a credit note on my account of the advancement I had paid. But no Vodacom refuses to fix this contract of mine. Which dumbo at cancelation did the cancelation for 24th oct God knows. So all the credit that is on my account suppose to be a credit note but nothing is happening I keep getting told I owe money to Vodacom to my account I am fed up kow