Exide Battery — inverter battery is not working

Address:

Siwan, Bihar, 841237

I have purchased a inverter battery (Exide) from a local dealer (Power zone) in siwan in october 2015 and now from june 2018 battery is not giving back up more than 2 hours on a single fan, battery warranty is 36 month and i have contacted more that 3 times to a local dealer he always took my battery for 3-4 days and give back to me but always the problem is remain same, kindly look into the matter and solve it, otherwise i will go to the consumer court, my advocate is preparing for notice to company, dealer and service center