Item delivered to wrong address

An order was made online for IPhone 8 64gb on the 24 October 2017. On 27 October I called to change the order to different handset IPhone Plus 8 64gb. I called in on 31 to confirm if the order was cancelled and I was told my order couldn't be changed as in the final stage. The agent advised to wait for the order and not to accept it then I will request the handset once it is back to warehouse. The order was delivered to wrong address (not the address given to them) on 03 November and it was sent back. I had requested for cancellation on 06 November. I am still waiting for the cancellation. The Telkom service is very poor.