Refund on cancelled order

I recently placed an order and paid for it via the instant EFT option, only to find out that the restaurant did not respond and my order was cancelled. I then received a notification that an instant refund was processed by Mr Delivery, however it has been two days and still no refund reflects in my account.

It is amazing that payment has to be made immediately however when it is time to refund, customers has to wait two to three days which I find is extremely unfair. Can Mr Delivery please amend there policy to payment being made once the order has been accepted by the restaurant or to have payment pending until the order is accepted and then released to the restaurant, so that if the restaurant doesn't respond or the order is cancelled, the customer refund can actually be immediate and not wait three days "immediate".