Amaron — Car battery not backup

Address:

BASUDEBA NANDA, ORDNANCE FACTORY'S ,BADMAL, BALANGIR. ODISHA 767070 QUATER NO TYPE -II FIFTH PASE OFBL ESTATE BADMAL

I had been purchase a battery for my car Tata Tiago XT petrol, the battery have 50 ah 12v as per battery performance is very poor thous sad battery fitting in my car and without any problem of car battery discharge within 7 days where the Exside battery backup was 45 to 60 backup in same car . The local agency are not respons my complain and no solve what shall I go to consumer court case .