Zomato — Missing items/incomplete order

I order a BFF veggie delite combo from Subway where I was supposed to receive 2 sandwiches and 2 cookies. I only received 1 sandwich with the 2 cookies and the restaurant says this is how they send orders (with only 1 sandwich).
This is the second incident where I have been sent incomplete orders.
The first one happened just 15 days prior to this incident where I received an incomplete order from Behrouz Biryani. They didn't keep the gulab jamun (Rs. 42) and didn't refund and the order amount was Rs. 429.