Every registered seller regularly and continually making sales of tangible personal property for storage, use, or other consumption in Covington County (which storage, use, or other consumption is not exempted from the tax imposed) shall at the time of making such sale or, if the storage, use, or other consumption of such tangible personal property in the county is not then taxable under this subpart, at the time such storage, use, or other consumption becomes taxable hereunder, collect the tax from the purchaser, and shall give to the purchaser a receipt therefor in the manner and form prescribed by the State Department of Revenue. On the twentieth day of the month following the close of each quarterly period, each registered seller shall file with the State Department of Revenue a return for the preceding quarterly period in such form as may be prescribed by the department, showing the total sales of the tangible personal property sold by such registered seller, the storage, use, or other consumption of which became subject to the tax imposed during the then preceding quarterly period; and each return shall be accompanied by a remittance of the amount of the tax required to be collected by such registered seller during the period followed by the return; provided, that any registered seller may defer collecting the tax with respect to credit sales until collection of the proceeds of such sales and may defer reporting credit sales until after their collection, but shall thereafter collect the taxes along with collection of the credit sales and shall include in each quarterly report all credit collections made during the preceding quarterly period, and shall omit the taxes with respect thereto at the time of filing such report or return. Any person who has paid to a registered seller the tax with respect to the use, storage, or other consumption of tangible personal property in Covington County need not file a report or make any further payment of the tax, but each person who purchases tangible personal property, the storage, use, or other consumption of which is subject to the tax imposed, and who has not paid the tax due with respect thereto to a registered seller, shall report and pay the tax as required by Section 45-20-242.53.