I'm having some problems with HITBTC. The first is that I lost 0.01 BTC there, I have sent some support with some evidence but no response and it's been more than 3 weeks.
Just "lost"? You are not telling your complete side of the story. You cant just deposit coins on an exchange and have them "lost" - you either sent those coins to a phishing site which cloned HitBTC pretty well or you lost money when trading on margin which has been recently started there. Either way it would be a fault from your side, because if it was not, then the exchange would have restored the money.
hitBTC is not that shady that they will outright rob their users' funds like that so stop lying.
Second, I always fail to do KYC there,
Then why are you still using them?
I feel this post is just to add mind-made accusations on HitBTC, I know they are shady but they are not scamming users like that. If you are having some genuine problems, you can post on their telegram channel too, it is pretty active and they might be able to solve it.