Grofers — paid 2069 but refunding only 12

Address:	Top floor, S-37, Gali No. 2, Vishwaspark, 110059
Website:	Grofers

I paid ₹2069 but got message ₹12 will be refunded. My order got cancelled when they are delivering everywhere else. Do understand the situation am willing to wait but they simply cancelled as per their convenience. How do i get my money back? Worst part is their customer service is so horrible. It's customers simply can't reach them. There's no way one could reach them. No matter what they should refund my money. ₹2057 is not a small amount. They need to pay me back.