I can't withdraw funds of 6.2 Million dollars (unable to withdraw & Scam)

I have deposited $5000 dollars (USD) in to Royal tungsten's wallet. I made lots of profits through scalping trading for few days and reached up to 6.2 Million Dollars (USD) Royal tungsten pointed out my trading is too frequent and violent. so they freeze my account for investigation. I understood they do investigation. However I kept telling them I didn't commit violation. There was some slippage while trading but I did trades myself using mobile phone.After investigation they told me I am abnormal and did illegal transaction. However, they didn't answer me valid reason why my tradings are illegal. They point out too many tradings with good profits. In order to withdraw money, they told me to make another deposit 10% of funds (620K dollar) that sounds like scam. I am really doubtful if Royal Tungsten is legit or not. They do not have company phone line and they do not answer any email. ( you can't basically reach to customer service unless you add them telegram)The email I received today, it is not even official email that requested me to make 5% deposit to unfreeze account. Looks like they keep trying to fishing me.You should not make any deposit to Royal Tungsten. They are not secured.