I guarantee that if you had called during business hours once a day for a week you would have gotten through. If you didn't, there would have been something severely wrong at the shop (complete closure) that would have warranted coming onto the forums to ask about.
as much as I would like to believe that it's busse's job to get back to every customer who leaves a message in a timely manner, if I want a knife from them I'm not going to assume that they will call me back - I will make sure that I get ahold of them within a weeks time to get whatever issue I want resolved resolved.
You are one customer in a sea of many. You had website issues which is understandable and to be expected if you only tried one computer. You left 2 messages but never got ahold of a live agent. Busse combat generally (in my experience, not as a generaly statment) does not respond to emails in a timely manner, so I'm not surprised that didn't work out for you. I wouldn't expect any company to be held responsible for not getting your order through in a timely manner under those conditions. This is coming from having worked both sides as a consumer and as a manufacturer, cook, and cashier. If you want a problem resolved, make sure that you get through to a live person and don't stop trying until you do. I absolutely understand your feeling pissed, I've personally walked out of several stores and canceled large orders on the spot because of similar issues: but I've never once said "this is completely your fault".
Get ahold of a live agent - meaning keep trying and don't leave anything to chance- and your issue will be resolved by busse combat.