mintcoiners has notified me that I must pay a $1,150 “final processing charge”

After submitting all the required verification documents and RMB exchange rate for foreign currencieshaving my account approved weeks ago, I assumed the withdrawal process would be smooth. However, this unexpected fee appeared suddenly, blocking my funds. I requested official documentation or any contractual clause that supports this charge, but their customer support only provided vague, scripted responses. It feels like a deliberate strategy to delay payouts and pressure traders into paying additional, undisclosed fees. This conduct is deceptive and unprofessional. I strongly warn other traders to avoid mintcoiners, as it operates more like a scam than a legitimate brokerage.