I want to file a Civil case for support

Good day po.i need some help and advice. Me and my husband are separated since our child is 3months old, now he is 4 years old. From the time we are separated, me and our son didnt have any financial support from him. He is a seaman. I am here working abroad as a nurse, one of our common friend told me that he is now back abroad, I left him (my husband) a message in facebook asking how he is, he told me that he dont care to me at all, and he told me not to have hope that we are getting back again because he has no plan at all. I ask him if he is going to give me and my son, especially my son a financial support, but he is not saying anything, he just ignored my message, he even hiding the fact that he is back from being a seaman. Im planning to file him a civil case for support when i come back there in the philippines. I want to know the steps how,what and where to ask about this case. Thanks. God bless

The better thing you do is to file RA 9262 for non-support. It's a criminal case so it has more teeth. Your ex will be in jail if he won't support your child. Just go to the prosecutor's office.