My Dutch fiance is going to contact the post office to see WTF is going on, so maybe we have a chance of at least stopping them from destroying it. If it is destroyed, and the GP won't write a prescription, I'm officially screwed one week from today, when my current stash runs out.
I'm so sorry that you are having to deal with this bureaucratic nonsense nightmare along with everything else. I hope that your fiance will be able to help them see sense (or at least your prescription!) and get your medication to you.
I hope your GP will be understanding of your situation and help you out in the short term.
When I lived in Europe, my mother used to send me clothes and occasionally the pockets would contain items not strictly related to apparel. I wonder if this might be an option? Also, maybe FedEx over the mail system? Still customs but usually a different group...
I'll keep my fingers crossed for you and hope that next time you are warned by the authorities it is for actually doing something wrong.