SHOCKING SERVICE FROM AVO BY NEDBANK

I placed an order on 22 November. About a day or two later I received a call saying that my product is out of stock and that I will be refunded. I even asked if I could wait until they get stock and I was advised that stock wont be coming in anytime soon. So why is the item still available for purchase on the website? Nonetheless, a few days later I called Avo as it still showed that my product was going to be delivered on 1 December. The consultant said that the first person I spoke to did not cancel my order and that she will do it after our call. Same story.. a few days later the product did not show as cancelled on my profile and still showing delivery on 1 December so I called again. This consultant told me that the second consultant also DID NOT cancel my order. This is now the 3rd person I spoke to and she actually did cancel the order in which she gave me a reference number. Ever since then I have not heard back from Avo so I followed up with them this morning and the response was “the cancellation request is with our suppliers who will be cancelling and refunding you for this order within early this week”. How can a refund take so long for something that was not in my control? If you know the item is out of stock, why is the investigation on the refund taking so long? I can understand it takes long if the product was delivered and needed to still be collected and then refunded but this was an issue on Avo's side because there is no stock so surely the refund could've been processed quicker? They also still have the item on their store as available which is going to cause such a huge inconvenience to the next customer. I have never dealt with a more unprofessional platform in my life!