(1) When the certificate of registration of a registered dealer is cancelled such registered dealer shall surrender forthwith to the appropriate assessing authority all unused declaration forms held by him or lying in stock.
(2) All declaration forms surrendered by a registered dealer under sub-rule (1) shall be cancelled by the appropriate assessing authority within two working days from the date of such surrender and the fact of such cancellation shall be reported by him to the Commissioner within three working days of such cancellation.