Swiggy — Completely Wrong shipment of goodies

Website:

swiggy.com

Order completely botched by instamart
Ordered 7 snacks
Recieved Completely Wrong shipment of 2 items that weren't ordered.
I see no help option for problems because of instamart.
No customer care helpline
The one I dialled said since they can see no active orders on the registered number they cannot help me.
I demand a refund since there services are so disappointing I don't want to risk it again.