Swiggy — Missing items and refund denied

Order[protected] Oct 2 2020

I placed order for certain items and when they got delivered I found the following items missing

1. Groundnut oil - ordered 2L delivered 1L
2. Asafoetdia - ordered 50g delivered 25g

They cost Rs. 260+65, when I raised a complaint both via the help chat and support email, the response was a simple apology with no refund.

I feel cheated, any help in getting the refund is appreciated.