Terrible Terrible service

I had a contract with blue lable which I finished paying last month. After I finished paying the contract I requested for the contract to be canceled and for the debi check to be canceled. I emailed the company to confirm cancellation of my contract and one of the agents responded my email and confirmed that I have finished paying the contract off and I will no longer be debited. To my suprise there is a debit order that went out of my account yesterday. I called the call centre spoke to agent called sibusiso and his manager called Sawanan, I emailed the manager the email I received previously which confirms that I have finished paying off the contract, he said he will come back to me yesterday but still nothing. I need my money to be refunded I no longer owe you for the contract please.......terrible terrible service. I would not recommend anyone to take a cellphone contract with them.