Whirlpool India — Whirlpool Washing machine Warranty card issue

I am having problem with whirlpool washing machine.it seems that motor got damaged and its not working.
we informed the whirlpool that we need to get repaired as soon as possible as it is very expensive to wash clothes at laundry shops. They mentioned that we need bill or warranty card.
But we dont have warranty card or bill.
we tried to ask dealer a duplicate bill but he is not providing me the bill and asking for warranty card. he is not at all responding well.
Whirlpool simply rejecting the request as we dont have bill
Please help me with this.
i am providing my model number and serial number

Model: 31239

Sr. No :INF[protected]
Date: 230518

please help me with this
Thanks