Terrible service/ i want my money back.

What a terrible experience i purchased 3 sneakers the 23 & 24th of December on their website. Only to find out when i logged in again to check on the delivery on the 30th that it was cancelled with no notification at all. When i called the customer service center the consultant advised that the orders were cancelled due to no stock and if the stock is low i should rather not place the order online. Then why advertise the sneakers if your system can not accommodate the orders placed? i was advised i should receive my refund within 24 - 48 hours of which never happened. i called back a few days later only to be told i should give it an additional 3 - 4 working days of which i still did not receive it. i called back again today and spoke to a consultant who speaks down to you as if you are a toddler that i should wait an additional 14 working days for my funds to be returned and the cancellation date suddenly changed to the 30th. after a good few minutes of speaking over each other he somewhat seemed very irritated with all my questions and explanations. for my 1st time doing a online purchase with them it is a terrible experience and i want my money back!