payment

hi my name is philani mkhize on the 25th of july i reiceved a subpoena from mathipane tsepane attorneys saying i must testify in court in johhanesburg high court on the 3th of august which i did. now as it is written on the subpoena that if i have lost an income on that day they will pay me.i went to mathipane attorneys i spoke to their receptinist she said i must give them my proof of income i did that now they say they dont belive my proof of in come.