GOVERNMENT EMPLOYEE COMPLAINT

Good day, I was abandoned by my estranged husband when I was on my 1st month pregnancy, since then hindi niya ako sinuportahan until mag 6 months na ako after giving birth to our son. Legally married kami. I used to asked him na i waive yung tax exemption sa part ko since ako yung may custody sa anak ko since buntis pa ako hanggang ngayon wala pdin po, sumulat na din ako sa hr nila regarding this since kailangan ko ng pirma ng employer niya pero wala pdin response. currently nagfile ako VAWC against my estranged husband at ongoing padin ang kaso, but then ang tanong ko, pwede ko ba ito ireklamo sa Commission on Civil Service? Kase karapatan ko naman iyon as single parent.