Small abattoirs have this problem, they have to jump around.
Do your best to support them.
When all the small guys are left and all we have are the big guys, you'll be out of business - There are plenty of places that don’t do individual kills, don’t do private kills, have huge minimum prices etc.
~Support the little guys, they’re our equivalents at the next point in the supply chain, just like the village butcher is to the supermarket and we are to the Intensive finishing farm.
Just be polite and say you want to use and support them as their small and local,. but cancelled twice is a bit much - should be clear enough to all and sundry,