Bad customer service

The beginning of October I called Vodacom to get a settlement amount as i wanted to cancel my contract. I got the settlement amount from the agent and confirmed this amount with her more than once. The following saturday 11 october i pay the settlement amount and submit my proof of payment. The same day i get confirmation that all documents have been received and my airtime and data that was allocated for the month was removed. I haven't received a statement or invoice from them with an outstanding amount. However for the past week i have been trying to call vodacom but i can never get through as it does not give me the option to speak to a consultant. From friday i have been getting automated calls as my account is in arrears???? No option to speak to a consultant.