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Unable to withdraw

I have already raised I'm unable to give whole information, after paying the tax also they asked me to pay 250 dollars as I withdrew 2500 dollars, after paying the tax they told some robot has detected the shift of orders they asked me to pay 500dollars but initially, I reluctant to pay they told if don't pay 500 withdrawal can't happen and they told 500 dollars are refundable, I asked after payment within how many hours I'll receive the money I asked they told in 2 to 3hrs later after 2hrs she said it will take 2 to3 days after 3 days she said system maintenance is happening it will take 10 to 15days now its almost a month I still didn't receive please help me to get my money back.