Royal Enfield — New tank manufacturing defect

I have recently gave my vehicle Royal Enfield 350X thunderbird (AP31 ER 5362), Engine no: U3SSCIJK844974, Frame no: ME3U3SSCIJK378239 on[protected] at service center at D No: 55/8/29, HB colony road, KRM colony, seethammadara, Visakhapatnam, Andhra Pradesh, 530013 for General Service.
On[protected] I received a call stating that my fuel tank got damaged. I replaced a new one before 5 months. I seriously don't understand all of a sudden how it will get damaged. It was fine when I gave the vehicle to service center. Every time when I give my vehicle to service center all new issues will raise. And saying that there is internal manufacturing defect in the tank so that’s why vehicle can’t start and there is overflow of fuel from below the tank. I gave vehicle in good state but from service center after a day they are intimating the tank had fault. On[protected], I had replaced a new tank afforded 10500 rupees of amount for a tank. Now the service center is telling that it will not cover in warranty. I replaced a new tank few months back, now without my fault how it will get damaged.
The spare parts are not with a good quality? And they are saying we can’t give guarantee for the product and it’s a manufacture defect, then how many times I should invest for a tank in year without good service. Then who should bare this amount always. Costumer should always pay full amount and the company does not thing about the costumer’s satisfaction. And I gave my vehicle without issues and now they are spoiled the vehicle in the service period and they are saying it’s not their fault.
It’s not the first issue I have replaced so many spare parts in the period of 3 years. I have invested so much amount, I had another low branded vehicle its service parts are less and labour charges are less but I have no issues with that vehicle. And Royal Enfield brand was big and spare parts and labour charges are more but service is poor and spare parts quality is bad.
I can’t always bare the amount for the vehicle unnecessarily fault by service centers, it’s an internal damage and I can't keep investing huge amount without my fault. I have all the necessary documents. I request you to give a replacement for that or else I'll just raise a complaint in consumer court