Credit to my Takealot account

Ordered 3 items on the 24th of March, delivery date was supposed to be the 26th then on the day of delivery the items got lost in transit, then I called to enquire and they said they will place an order again, they did so but the delivery date stated was too late as it was stating the 1st of April, therefore I cancelled the order, got confirmation that it has been cancelled and I will be credited money into my takealot account. On the 27th of March, 1 item from the 3 got delivered, I called the agents again telling them I cancelled this order, can they log a return for it. I called again and did a follow up on what is happening and sent emails then finally they sent a driver to collect the item on the 2nd of April. Now I am dealing with sending emails everyday to ask for a refund and they claiming that they do not see that the item was collected, they taking the matter to a relevant department. Each time I contact them, have to deal with a new person on this case, who doesn't know anything about the issue, and will be escalating the case. The agents do not care and are not even giving me feedback as I have spoken to 6 different people. It is now the 10th of April and I still haven't received my refund.