Huobi Account Balance Disappeared Without Explanation

I had cryptocurrency in my Huobi account, but I did not check the account for a long time. When I finally checked it, I was shocked to see that my account balance was $0.

I requested my account history and related documents, but they were not provided to me.

Where did the money in my account go? Can someone please step forward and explain what happened? Whoever can help resolve this issue, please contact me and provide a clear explanation of what happened to my funds.