Telephonic Upgrade canceled same day yet they went forward with upgrade!

On 15 December 2017 i received a call from a person called Joe Adams, who then proceeded to upgrade my contract over the phone. He informed me that his employee number was 1391. Furthermore he told me that his contact number at Mondo Vodacom was ********** 666 for future reference. After the update he gave me this reference to use - ********** 7 and he also gave me the courier order number - U ********** . Later the same day at approximately 14h00, I phoned the above toll free number Joe had given me and i then spoke to a lady called Celina. I informed Celina that i no longer wanted this specific phone upgrade ( ********** 439) with all these added data packages: ********** 050 and ********** 184 and ********** 291 and ********** 028 and ********** 90 . I presumed that my cancellation instruction had been performed until the courier came to deliver the new upgraded phone. I refuse accept the parcel or to sign for it and told him to return to sender. When i called the toll free number ********** 666 to inform them that i had returned the phone, they told me to call the cancellation department on ********** . Can somebody from management please contact me urgently in order to assist me with my problem. I have been calling and asking for help, but nobody seems able to assist me with my problem. Your cooperation will be appreciated. Kind regards Ansie Marais ********** 439