Unauthorized deduction from my payslip

I don't know how they got a hold of my details they however managed and worse they also managed to get a slice by deducting unauthorized in my payslip.when i sent them an email they told me about a broker from RMA and what not.now my issue is when drafting a will are my assets not supposed to reflect on the will?writing a will requires witnesses and next of kin contact details should I die.Not even once have they called me regardless of the correspondence i wrote instead they continue to deduct my money from my payslip.I would briefly like to know what is in that " will" i also don't know about and would like to see my signature with signatories.i want my money back from Capital legacy and they must stop de*****ing people.