Nextgen Data Solution / Worktypingjob.com — Salary not paid

I have asked all the payment details before starting the work and I submitted my work at feb 12th before 3 days of due date I got 90%accuracy and salary 54, 000 msg. After work submission they r asking me too pay tax amount.I suggest them to detect the tax amount from salary but they have not did anything right now and I didn't got my salary