Royal Enfield — Delay of Delivery

I, Swarnangshu Ghosh booked a Royal Enfield Meteor 350 Supernova Blue on 1st September'21, from Serampure, District- Hooghly, West Bengal, showroom. Before booking I have asked that should I get it before 15th December'21??? They have told that after the booking procedure done they can confirm me. Then I paid Rs. 10, 000 as advance for booking, after few minutes later they have given me the booking receipt & confirmed me that I will get my Supernova Blue on 30th November'21, which is also written on booking slip. But till today ( 07/12/21 ) I don't get any confirmation from showroom when I will get my bike. I need it very urgently.