Hero Motocorp — Not getting mileage nearly gives 15 k. [protected]@ltr from hero h. f deluxe.

Address:	Birbhum, West Bengal, 731224
Website:	Hero motocorp

From last month my hero h. F deluxe giving nearly 15 k. M per ltr avg mileage and it is seen from fuel indicator that fuel automatically decreases from tank. I complained again and again but the authorised dealer named paul auto mobiles address: city-rampurhat, pin no: 731224 dist: birbhum, state: w. B. Paying no responsibility at all and don't fixing the problem. They clearly states we can do nothing. Then how will i get justice claim to fix it or claim warranty in future. Even i don't claim warranty for it. At least i badly need to fix this problem and request to take action against this dealer so they solve my bike's problem or warranty claim for bike.
Please help me. I badly need the solution to fix it. I'm helpless.
I'll be highly obliged if you understand my helpless situation.
Thanking you.
Mrinmoy modal
Bike details: engine no :ha11efe9g10511
Chassis no: mblha11aee9g30115
Dealers contact no: [protected]/[protected].