The Commissioner may at any time after the filing of a support lien serve a copy of said lien upon any person, firm, corporation, association, political subdivision or department of the Commonwealth in possession of earnings, or deposits or balances held in any bank account of any nature that are due, owing, or belonging to such debtor. Such support lien shall be served upon the person, firm, corporation, association, political subdivision or department of the Commonwealth either in the manner prescribed for the service of warrant in a civil action or by certified mail, return receipt requested. At any time after a support lien has been filed, the Director may notify consumer credit reporting agencies that the lien has been filed. No lien filed under § 63.2-1927 shall have any effect against earnings or bank deposits or balances unless it states the amount of the support debt accrued and unless service upon such person, firm, corporation, association, political subdivision or department of the Commonwealth in possession of earnings or bank accounts, deposits or balances is accomplished pursuant to this section.