I have been scouring the Internet for a very long time in search of other income besides cryptocurrency, I like to learn something new. And you know what I found, I think it's no secret that exchangers like to entice new customers with various gifts or bonuses. Here I found such an exchange in Google. I read a little bit about it, logged in, got 100USDT to my account.

But that's not all, I could not withdraw, asked to replenish the account.

 I couldn't withdraw all these sums and I was asked to deposit some money to my account.
Being on their exchanger, found some good stuff, and invested $1000, I will be withdrawing in a week. Should have accumulated passive 1200-1400$ 

nice try, why not Use Escrow for this one and surely there will be plenty of people will comply to your call.

500 USDT each is a big money just to be wasted time from your promises.