Vodacom *****ing money from customers

I upgraded my contract in August. Everything was fine in September, however Vodacom did not honor the contract in October. I was billed for data bundles that I did not receive. I call the customer service team and no-one has gotten back to me in 4 days after I was told that it is a 24 hour turnaround time. This is shocking service. Vodacom is now stooping to *****ing money from their customers.