Hero Motocorp — I am complaining regarding damage of oil tank paint naturally

My self suzat ali ..i have buyed super Splendor bike in the year of 2018...but now in 2020 my bike oil tankys color was damaged naturally...i have done complaint in head office delhi...but nothing comes to me...jaiswal motors which was in baheri U.P..i have gone there but there hospitality regarding solving the problem is very bad..they dont have manners to talk with customer...they told me that i will not do go away from my showroom..