[Roscoe]

Traditionally, this time of the year is holiday time in the UK. When a company has only a small amount of employees, instead of staying open and running with skeleton staff, the whole place closes down. That could be what's happened with Anthropics, although, if it has, you'd have thought a message would have been left on this forum to advise of that.
There has to be a good reason why your calls/emails haven't been answered.