Withdrawal rejection and margin

Withdrawal was refused by Kaiher's manager, and when I requested and applied for withdrawal, the fund of 181,550 yen was frozen due to remittance across the UK border, and I was asked to pay a deposit of 90,775 yen, which is 50% of the fund. After paying the deposit, they say they will return the frozen funds and the deposit to my account. Actually 181550 yen has not been refunded to me. I checked and found that there is no security deposit for UK cross-border payments.