That’s a major problem. I think I had 3 bags of kibble and about 3-4 different kinds of canned food, maybe 10-12 cans. Fortunately I was able to get refunded for most of it, but I still lost a lot of money. Also I hate wasting food.Sigh. I think switching over to a simple homemade diet for a few weeks might be necessary. But we've got these massive bags of kibble to get through.
You need to keep some on hand though and maybe you can freeze some ?