I can't help you with their support, or lack thereof, but I can suggest something. If you aren't worried about voiding your warrenty, especially considering that they have basically told you they feel it is void, open up the case. You should find a major name brand manufacturer hard drive in the case. Do an RMA of the drive directly back to the disk manufacturer and you will get a new disk to put in the enclosure.
Please don't credit this suggestion to me, but another member posted this solution to a firewire drive that was out of VST's warrenty period and he decided to take the chance of opening it up. If my memory serves, the drive was an IBM and it even had a direct web URL to set up the RMA. The poster was very pleased with the outcome.
In his case, the drive failed very shortly after the normal warrenty expired and VST's response was for him to purchase a new drive. A company isn't required in any way to extend a warrenty after the contractual end date, but it certainly does make friends of your customers. Your posting may indicate a bigger problem at VST if posts like yours and others continually describe less than stellar service from them.
From a technicial standpoint, I seriously doubt that the enclosure or the related Firewire interface is the weakness in the drive unit, but that the disk itself has failed. Most disk manufactures have rediculously long warrenties for their hardware and therefore you can get a replacement for the failed disk directly from them.
[This message has been edited by jeromep (edited 01-28-2001).]