Wanted 10% upfront, now wants more

Tried to withdraw but broker froze my account and wanted 10% upfront. I asked to take whatever fees automatically from transaction but they refused and offered no help. Was able to gather enough fees and they said they will process payment. after a week of silence I contacted them and they stated I needed to pay 13% tax and they’ll process after. And I’ll have to pay another 12% after. This feels like a scam. I don’t have the funds to keep paying these “fees” please help.