Notwithstanding the provisions of §§ 8.01-515 and 8.01-516.1, any employer against whom any garnishment is served in connection with an action or judgment against an employee may pay to such employee when due wages or salary not exceeding the amount exempted by § 34-29 unless such exemptions shall have been specifically disallowed by the court and shall answer such garnishment summons by a written statement verified by affidavit, showing the amount of wages or salary due on the return date of the garnishment summons and the amount of wages or salary so exempted, and if there shall be an excess of wages or salary so due over the amount of the exemptions, the employer may pay the amount of such excess into the court where the garnishment summons is returnable, which payment when determined by the court to be correct will constitute a discharge of any liability of the employer to the employee for the wages or salary so withheld.