SOrry to be a bit pedantic, but do you mean "stole" as in, they had an issue with your KYC and you didn't bother answering? I've seen it happen too many times, it's just a matter of reading their emails thoroughly.
That's how I was able to finally get my KYC done, I realized the last few emails they had sent me all asked for a PHOTO of my passport, I was sending a scanned document, so I did, and once I sent the PHOTO as they had requested and it wasn't more than 2 hours that I Was able to use my account normally again. Maybe try contacting them once more and see if you can get your issue fixed!
Why have you selected HitBTC to trade? It is well knows information about their support team. Why not go to Binance or Bithumb? Same KYC procedure, but the support if far more professional. Why do you even need to pass KYC? Trade somewhere where KYC is not needed. I'm sure your trading volume is not more than 2BTC.
Binance is much better than other exchanges.