In fairness, their business model has pretty much just collapsed?
Its their own fault if their business collapsed as they knew this was coming for a long time. Your business collapsing is also not an excuse to keep peoples money.
There is also nothing stopping them from continuing on and just do what DPD, Addresspal etc.. are doing. I for one would use them if the service was the same as before as they were the most reliable, fast and value for money.
Finally got it back yesterday. Keep annoying them hopefully you will get it soon.