去family court要求income withholding order. 這個問題恐怕要找律師，但是不應該很貴。而且你可以要求法院判他陪你律師費。
http://www.nolo.com/legal-encyclopedia/texas-wage-garnishment-law.html
https://childsupport.oag.state.tx.us/wps/portal/WageWithholdingTFCDefinitions
你說州裏機構不給力，這裏的表格你都試過啦？ look for “Income withholding" forms.
https://www.texasattorneygeneral.gov/cs/cs-forms
