There's been a brief interruption to the supply of tiotropium refill capsules - stocks should be back in most pharms from tomorrow. So if you've got a script in for them and there has been a delay, that'll be why.
You may also find that you receive a full handihaler + refill pack rather than just a refill. The manufacturer is only charging for the refill in this situation.
Hopefully nobody has been badly affected.
Official info from the supplier here: