Very bad call centre service

I am very disappointed with the call centre consultants on the contract section. I think that section must be closed. I am not sure is training or not. First I reported that billing is wrong the lady failed to assist. I made another call the gentleman gave me a proper services. I even upgraded another contracts. The gentleman promised that the account for the first contract is cancelled as per my request. This month same money was deducted. When I made a call the lady failed to help and her supervisor complaining that they are unable to access my account. I was refered to the nearest branch. I felt being abused by Vodacom. I am a loyal customer for Vodacom besides contracts phone I am buying prepared services more than a R 1000 per month. I spend a R2000 or more to Vodacom. It very disappointing to receive a vey bad service from the company that I take as an international brand. I know that they have a lot of customers that why they are abusing its customers. That is the first company that has an unhelpful employees where customers are abused. Billing customers will Vodacom is something that sounds good to Vodacom contract employees . I was told that is part of Vodacom policies.