Royal Enfield — fuel tank rusting and improper maintenance

Address:

695513

I have purchased a bullet from royal enfield marikar trivandrum
I have done service and all clear until i was in india
That time i noticed that my fuel tank inside is rusting little bit wen i complained about it to showroom they said its normal among royal enfield if anything happen they will change
Now the tank full got heavy rust and have carburetor float value damage
Now they says the warranty period is over we cant do anything