No matter how much I would like to be on the side of the customer, this sounds a bit weird to me as well.

Yes, I think you did nothing wrong and you are probably trying to do what you think happened but we are talking about 0.14 bitcoins here buddy, this is a website that probably makes that much daily (if not hourly) and you think they need to hack you and take your money? Doesn’t that sound weird to you at all ?