Hope the tax amount can be reconciled

When I made a profit and wanted to withdraw money, I was rejected. The customer service told me that I need to make up 15% of the tax, but the time limit is only 3 days. Although I have applied for an extension once, I have tried my best to make up half of the tax, but I still can’t make it up. Can I apply for an adjustment? drop it? Although the withdrawal record is approved, the refund and withdrawal have not been received! I really don't understand why the tax is extra and then make up the deposit, but it's fine if the amount can't be deducted from the fund? !