I have paid a lawyer that has helped me through child support but hasn't helped with my custody and doesn't respond

Depending on what type of case this is (divorce or paternity) you may be asking about two separate cases. If there are two separate cases, perhaps the lawyer was only retained for the first case and does not what to represent you in the ongoing custody case.

Mr. Mullaney is correct. Review the retainer agreement, which should describe the scope of representation.