VODACOM CALL CENTRE TERRIBLE SERVICE

I have been dealing with the Vodacom call centre with regards to an upgrade. I was advised by an agent for a mobile which was not available. I was promised a device within 3 to 5 working days but the device was back logged for some reason . So I spoke to the call centre manager Neil of the upgrades department, he advised me that I will receive the device after some time. I then cancelled the upgrade and asked him to cancel it with immediate effect, he agreed to do so.i had cancelled the upgrade within 3 days because I had 14 days to cancel. Despite the cancellation once Vodacom had received their stock they had dispatched the device to my residence. I did not accept the device I have sent numerous emails with no response and numerous calls made with nobody to assist. Its been a month now and the upgrade has not been cancelled. Vodacom's policies and agent and MANAGERS PROMISES. Is all utter nonsense because they can not deliver . Pathetic communication and terrible service.