I have ordered a WD My Cloud EX2 Ultra, 20 TB on Amazon.co.uk through a seller that is vouched by Amazon.co.uk. A few hours later my order was cancelled without any reasons even though the bank transaction has been authorised. I have contacted the Amazon.co.uk customer service to get to know why my order was cancelled and without any reasons. They replied to me that the seller has cancelled the order and that they couldn't do anything about it since the seller has cancelled it. I found it quite upsetting that Amazon.co.uk is vouching for sellers that have the possibility to cancel orders without giving any prior reason or just because they feel like it... It doesn't give me any reasons to trust to order in the future to Amazon.co.uk since they cannot do anything about it and they are not reassuring at all since they cannot promise it won't happen in the future and all they can say is "I'm sorry this happened to you". Thank you but this doesn't help me in this kind of situation.