Beware when ordering from InstaMart

I ordered 6 items today , in that was 4 KG Ariel Washing powder. Swiggy gave me a code to be said during delivery aswell, the order was delivered in super 9 minutes, but the rider was in a hurry, I gave him the code and accepted the order, he was about to leave, bit I felt the 2 bags to be lighter as I had a 4KG washing powder in it. So We went to check right infront of him. He was staying cool with VIMAL or something in his mouth but was about to leave, We said there is a product missing, he was like check again, then suddenly he checked his bag and takes out the 4KG powder. The MRP and discount was huge on it. He just gave and left and there was no apologies, thats when I felt something. So even though its convenient, so check the products. SWIGGY gives items count. So its better to count it. ( example if you order 3 half liters of milk, its 3 different item) Anybody had similar experience?