Show Cause Notice for trying to import E-Cigarette

Hello Dear Lawyers, I today got a post from OFFICE OF THE DEPUTY COMMISSIONER OF CUSTOMS: POSTAL APPRAISING DEPARTMENT, FOREIGN POST OFFICE telling me that the Vaping device (E-Cigarette) I tried to import, falls under prohibited goods. While ordering, I was completely unaware that this product was prohibited. The letter says, "You are hereby called upon to show cause notice to the undersigned Foreign Post Office within 15 days of the receipt of Show Cause Notice as to why: a) The prohibited article viz. "Vaping Device" should not be confiscated under section 111(d) of the Customs Act 1962 and: b) Penalty should not be imposed on him/her under section 112 of the Customs Act of 1962." "The noticee is required to produce all the evidences at the time of showing cause upon which he intends to rely upon in support of his/her defense. The noticee should also indicate in his/her written reply whether he/she would like to be heard in person before the case is adjudicated, failing which it would be construed that he/she does not require personal hearing. If no cause is shown against the action proposed to be taken herein above within 15 days of the receipt of this notice or if they fail to appear for the <B> PERSONAL HEARING ON ANY OF THE FOLLOWING DATES 30.10.2020, 04.11.2020, OR 11.11.2020,</B> the case will be decided exparte on the basis of available records." How do I proceed with this problem? Should I visit for the personal hearing on the mentioned dates? Thanks in advance for all the help! Much appreciated! P.S - Please be a little descriptive as I'm highly illiterate on legal matters.