Any person who refuses to (i) furnish to the commissioner of the revenue access to books of account or other papers and records, (ii) furnish information to the commissioner of the revenue relating to the assessment of taxes, (iii) answer under oath questions touching any person’s tax liability, or (iv) exhibit to the commissioner of the revenue any subject of taxation liable to assessment by the commissioner of the revenue, shall be deemed guilty of a Class 3 misdemeanor. Each day’s refusal to furnish such access or information shall constitute a separate offense. No person other than the taxpayer shall be convicted under this section unless he has willfully failed to comply with a summons properly issued under § 58.1-3110.