I did hear some stores didn't end up getting any of the black shorts/sweats earlier this month at all and that they might come with the next drop, take that with a grain of salt though.
I've sold a ton on GOAT early on, but as more sellers get on here, its become an undercutting war.
Edit: Just read your issue, it's possible they might have sent the wrong shoes, but they are definitely legit. See if you can get in contact with them.