Royal Enfield — petrol tank rusted from inside.

Address:

Raigad, Maharashtra, 410206

I have purchased re classic 500 inlast year. With in 18 months petrol tank got rusted see attached photos. I took my bike to pratik motors service centre in panvel, navi mumbai. Service manager said they will replace tank in warrenty, but now they don't have in stock they have to order it. So i left my bike in service center for tank replacement on 9th oct 2017. Now after 8 days still they have not recieved tank from company. My bike is still at service centre.
Quality of royal enfield is now degrading day by day.