sc.judiciary.gov.ph/jurisprudence/2012/august2012/171182.pdf
"x x x.
Trial judges should not immediately issue writs of execution or garnishment against the Government or any of its subdivisions, agencies and instrumentalities to enforce money judgments.1 They should bear in mind that the primary jurisdiction to examine, audit and settle all claims of any
sort due from the Government or any of its subdivisions, agencies and instrumentalities pertains to the Commission on Audit (COA) pursuant to Presidential Decree No. 1445 (Government Auditing Code of the Philippines).
x x x."