Amaron — Xerox warranty card given not a card

Address:

Badepur colony,KALABURAGI - 585101

I purchased a new battery from amaron dealer and then the battery was defective so had to replace it with a new one using my warranty card within 2months and then the dealer gave a new one and again after a month its the same the battery is defective again but this time i have lost my warranty card as he didn’t give a card as he did before but a xerox paper.so i don’t know what to do now?