Unix Enterprise — fraud and harassment

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Unix enterprise

I am registering online data entry from unix enterprise. I completed my work with 99% accuracy. I submitted the work, then shows you qc failed. Today i got a mail from adv. Mane, you voilated the agreement and pay the penalty amount 4500 and also pay 3000 within 48 hrs. Also they messaged to issue the legal notice against you and near police station. What should i do. Please help me