It's not PBK's fault - it's new restrictions put on packages in the UK from the New Year as well as the holiday rush. They were so backlogged it was threatening to shut them down. But, everyone's package is on the way, and if you don't receive it in 28 days they'll send you an identical order for free.
They're a good company - completely absorbing the losses that they're being given by the UK airmail. Be patient.