Tax Evasion to seize my account

Even after paying tax, I am unable to withdraw my money. Customer care informed me that because I had a deposit of £55,600 from a third party, my trading account was suspended because they said i broke the law of against anti theft and tax evasion . I had to put deposit 15% of my investment into my account if I still wanted to withdraw which doesn’t make sense . I had to ask an Australian company called AssetsClaimback recovery service for a chargeback. Even after i made the 15% deposit this scammers called Zeus capital. still withhold my money