Can I act now to avoid a notice from customs for importing a sex toy

Hello sir I have ordered a sex toy from a global e commerce website without being aware that the item is in the prohibited items list. The parcel is in transit to Kolkata Airport Sorting office. I am afraid I'll receive a show cause notice from the Assistant Commissioner about this act. Can I write through a lawyer to the Assistant Commissioner about the matter and say that I do not wish to import the shipment anymore and to confiscate or send it back to the sender as they seem fit ? or should I wait for the show cause notice and then counter it ? Is there anyway for me to request any authority between Kolkata Airport sorting office and Kolkata customs check to intercept the parcel and destroy/send it back to the sender before the parcel reaches the customs for inspection ? I thought declaring contents about the parcel beforehand and not claiming it now would be better than the customs examining it which leads to a show cause notice. Kindly let me know which would be a wise step