Once an order has been placed with Takealot it cannot be cancelled

Yesterday 26 February 2018 I ordered and paid a Samsung J5 phone per order number ********** 9. I tried to cancel the order on their website within 30 minutes minutes of payments to stop them from processing the order and stop delivery. There was no option for cancellation on their automated platform. I then sent several emails to ********** and phoned their call center number ********** where I spoke to call center agent. Despite this they proceeded to process the order and today sent an sms that delivery will take place tomorrow. I went again to their website and the only option available was to return the product. Again the two options available here were either to ask them to collect it or for me to send it it. I chose the latter option and to my surprise the feedback I got was that I am supposed to hand deliver it their offices in Cape Town. I live in Pretoria.I tried to go back to the website to change the option but there is no option for changing the option. Previously before takealot was taken over by its current owners I could call the call center and cancel an order but it is now a nightmare to try and do so. Going forward I will think very hard before I consider doing further with them again.