I waited a couple of months for my MC-0.5 and checked in periodically. They had installed new machinery and also experienced supply chain delays. I received my power conditioner and so did others on the forum (there is a thread in which we give each other updates).
Some of us believe that new power conditioners were the first products to ship. I'm sure cables will follow. Sucks that they don't reply to you, but I don't think there's any financial trouble with the company.