No matter how many times I ask, they won't give me my money back!

I paid the tax to withdraw the money from the account, and when the transfer was delayed a few days, I requested a security deposit. The transfer bank stops me (I don't know if it's true. I think it's a lie.) They threaten to refund me if I don't pay the service charge. It was definitely a scam. I was foolish to be deceived, but this customer service manager really pisses me off.