Swiggy — non vegetarian order instead of veg. which was ordered

Address:

North Goa, Goa, 403001

Today i ordered1 butter pepper paneer veg roll and it was the same on the bill too. But once i began eating, to my shock i realized it was not paneer and in fact, chicken. How can you make such a mistake when literally countless people are hardcore vegetarians and consider it a part of their religion. The biggest flaw i found was that not even green and red symbols used to indicate veg or non veg were placed on the packet. This is a serious matter and i expect swiggy as well as the restaurant to take responsibility as swiggy are the ones we are ordering food from and you have to make sure correct items are delivered.
My order number was - "#[protected]"
Restaurant name - "rolls mania - gastronut"