Issues with Contracts Settlement

I contacted the Vodacom cancellations department on the 6th of July to settle two contracts. I received quotes, made the payment, and send through all the required documentation. Vodacom still debited the full amount at month-end and I reversed the debit order and called Customer care to enquire. I was advised that the invoice had already gone through and the settlement amounts excluded the cancellation amounts and this was not conveyed to me by the cancellations department. I was advised to raise this with the cancellations department, but the department has sent me back to Customer care to instruct customer care to log a service query for the back office to contact me. I do not understand what this all means and in the meantime, I am getting calls and SMS from the Vodacom system demanding payment. Can I get someone that can be able to resolve this without me going back and forth?