I didnt think I would write a bad review on this game

So. Heres my problem. I have 4 Pokeballs left. And when I say 4 im not talking great balls because Ill have a ton of those to. I use one on a Pokémon Im trying to catch and lose it then thinking I still have pokeballs and great balls, nope, theyre gone. Its seems whenever I have 3 left of any ball they go poof. Like what is this crap. I walk long distances for those. Like fix these problems. Please. Or Im deleting this game

Yui-Miku-San about Pokémon GO, v1.31.0