Appalling service and no regard for customers!

I recently ordered various items on 29 November 2019 and was told that my items woud be delivered on 6 December 2019.

The first issue arose when one of the items in my order was unexpectedly cancelled without any explanation. Furthermore, on 6 December 2019 my order was still not delivered. I reached out to Superbalist.com regarding this but received no response. On 8 December 2019 I received an email from Superbalist.com, informing me that my order was delayed and that an item was cancelled due to the fact that "there was in actual fact no stock on the day that I ordered". I was informed that new stock has been received but that I would have to pay the full price in order to receive it instead of the discounted price I originally purchased it. In addition, I was told that delivery would be delayed until 11 December 2019 (12 days after my order).

I am absolutely shocked by this service. How can I order an item that appeared to be in stock, only to be told that it was not. Now that there is stock (even before my order has been delivered) I am told that I have to re-order the item at full price. Clearly they have no regard for the Consumer Protection Act or their customers.