Bluehawk Tactical pay what's due to me,fly by night in disguise

I was on the 3months fixed contract as a Tactical officer with agreed salary of 11k a month,I never received any payslip for 3months.Today HR by the name Marisky forward my payslip showing the basic of 7.5k which is not what we agreed on and she insist they owe me nothing. And it's not only payment, the working condition too,I was forced to work at mine shafts without ppe and medicals.Sometimes I would be posted on guards posts to relieve them yet I'm a Tactical officer and expected to do security guards duty carrying a Tactical rifle. I just need my salary with the basic we agreed upon.