What do you work there or something?
No they have taken payment without refund and cancelled orders. Who does that?
They can process order cancellations on the weekend but they can't process a refund? That is not a "mistake" it is bad business. Quit making excuses for them. If they were closed they would have processed the order cancellation on monday too.
Of course I don't work there. My comments are made based on straight forward common sense. Who does that? Companies who MAY have made an honest mistake.