Zomato — my order# [protected] was cancelled without my authentication

Address:

Serilingampally, Hyderabad, Andhra Pradesh, 500019

Zomato has turned to be a cheater app looting customers money.
I have placed an order [protected] worth 398 rupees.
I paid the same. After placing i thought of ordering from nearby restaurant as suddenly nearby hotel was visible.
I thought of cancelling and went to cancel.
Before i cancel, i can notice there was a message that 'it would cost me full amount of i cancel'. I was just reading it. Neither i accepted nor did anything. Suddenly my order was showing cancelled. Really patchetic and it is a glitch in zomato app.
I immediately asked zomato to deliver my food if cannot be refunded. But zomato had declined to deliver the food.
They declined refund as well despite there was no mistake from my end.
Why would one cancel if it costs full amount.
Very worst service by zomato.
I demand zomato to refund my amount immediately.