Royal Enfield — new fuel tank size my engine,,,, poor product

Address:

201301

My name is amit sharma and i purchased a New fuel tank for my royal enfield classic 350 from their dealer named:
Indian automobiles
J270 Patel Nagar 1st
near old bus stand ghaziabad 20100
Ph :[protected]

so i brought fuel tank part number: 866176 on 6th may 2018. i saw the tnk and i asked the dealer that there is a layes of paint inside it but he told me that this is coating sir product is ok and new, so i brought it and got fixed with mechanic but after riding 15 km my bike stopped and the engine was dead, i went to mechanic and we found that the so called coating inside the tank has seized my engine giving me a heavy damage,
all parts of engine are gone off
1 valve .
2. valve seal
3. rocker packing
4. head packing
5. cylender packing
6. cylender kit
7. carburator with rubber
8.Engine oil

so i want to complain against royal enfield and the dealer that why they have given me the local tank and why they insist me to buy one. i have paid 8180 inr for new tank and it has given me the damage and loss of 25000 inr

kindly do the needful as i need my bike to be repaired with new part as soon as possible because i dont have any other vehicle to commute.

No one is listning to me now
Regards
Amit Sharma
[protected]