I have worked with one of FK/AMZN in a commercial role in the past. I believe you have sufficient reason not to keep the sofa with you for so long (15 months is crazy)
Just to get facts correct: Godrej would be a party to the transaction. Flipkart is just a marketplace/platform here, Godrej should be the seller. OP should check the invoice, if the seller’s name is Godrej or Flipkart.