First of all, I exchanged money on Bitstamp exclusively since last spring. Withdrawals were less frequent during these last few months, but I had withdrawals both larger and smaller than the one I tried making now. I'm a verified customer with them.

Second, while some questions kinda sorta make sense, others are rather useless, redundant or impossible to address accurately. And some of their requests are downright audacious, not to mention grossly lacking respect to personal security. If I mine it's none of their goddamn business what the hell I mine with, what are the hardware specs and sure as hell they don't need to get invoices to every  piece of hardware I mine with.