From the looks of their website, you must have placed your order just prior to them going out of business. If you did it via credit card you can get your money back. I did from a recent RCM plans order that never shipped.
Lone Star balsa had a big fire some time back and was out of business for quite a while. They then reopened but I guess they couldn't keep it going and had to shut down a second time. I switched from them to Balsa USA and have been very happy.
Carl