Have you ever meet the following situation?

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I signed a site named Blue Mail to read mails, it is a nice site who provide many mails each day and the payment is very low of 3$, but when I accumilated about 2$, they sent me an email which said that the domain asked them to pay a lot of money, they have no choice but shut off, so my earnings lost. Is there anyone who meet this kind of situation? and there also some sites who never respond you when you apply for payment.