Anyone had their account frozen by a crypto exchange?

I'm curious about people's real experiences with centralized exchanges freezing or restricting accounts.

If this has happened to you:

• Which exchange was it?
• How long was your account frozen?
• Did they explain why?
• How responsive was customer support?
• Were you eventually able to withdraw your funds?
• If so, what actually helped resolve the issue?

I'm especially interested in cases that took weeks or months to resolve, or where the funds are still inaccessible.

Would appreciate hearing your experience.