Cancelling with Vodacom

Good Morning. I am having trouble cancelling my contract that took out with you guys. Product was delivered on 16 November & the 22nd November I called to cancel the contract (Which is still in the 14 day cancellation period). I was told that the product would be picked up via courier & it is still with me.

+***5 is cellphone number of the existing contract.

+27 (72) *** is the new contract number. Went into to the store yesterday they said the phones are still active after being told that they will pick up the devices.