At the time of service of a copy of the writ of attachment and a notice of attachment on a third person, the levying officer shall request the third person to give the levying officer a garnishee’s memorandum containing the information required by this section. Within 10 days after the request is made, the third person shall mail or deliver the garnishee’s memorandum to the levying officer whether or not the levy is effective. (CCP 488.610)