My question involves child support in the State of: ca

why would a person not have to pay child support to the custodial parent, even after i was orderd to file on her so that i could recive county aid , many times...?
now our child lives with her (now that shes clean ect). i owed for a years worth of support without notice ( they said they did but they had no addresse i ever lived at)..i found out by dmv suspending my drivers license.i had been paying on a small amount owed cuz she got aid for 2 months. but was unaware of any month 2 month charges ordered. they just took my license again because i can only pay 2/3 of the payment a month due to being laid off my full time job.they take half of what i make...now i use food stamps and am geting into debt bad. any ideas,tips or pointers, the mother wasnt around for 5 years and dont have 2 pay nothen, i raised her alone and now the mother wont even fallow visitation orders,thats a dif story 4 later....im soo lost plz help