i Lost $8,000 in Smart Contract block chain. Scam — Don’t Make the Same Mistake again

i got 12 ETH reward, and 8000Usdt already in my Wallet. Total 40k Usdt. i trying to Withdraw from Smart Contract block chain. unfortunately i couldn’t, then i Chatted with them. they replied as below. please read below. i request Anybody share solution

“ Dear customer, your current withdrawal application has been accepted and is in the review stage. Since this is your first large-amount transfer, in order to ensure the safety of your funds, the platform's risk control system has locked your account. You are now required to cooperate in completing the account verification. After the verification is successful, the USDT you withdraw will arrive in your wallet account. The verification method is to provide a commonly used encrypted address. After the review and verification is passed, you need to transfer 30% of the verification fee to activate the locked account. Your current account total balance is 40379USDT. You need to pay 12113.7USDT to verify your current account to ensure the safety of funds. After activation, the previously withdrawn USDT will be successfully unlocked and arrive in your encrypted wallet. USDT in the verified account can also be withdrawn to your encrypted wallet.