I've already tried legal aid and was told that they don't work from the fathers side, only the mothers.
Put on a dress and some heels. Then, march your @$$ down to their office and demand action.
Do whatever you need to do to get custody AND equitable child support. DO NOT give up on the child support. It's not about squeezing your ex for every dime, but about being able to provide as well for your daughter as possible.