Swiggy - Not issued my Refund

I want to describe the worst experience with Swiggy where I ordered food at *.** pm on **th Dec **** and waited till *.** pm for food to get delivered. Initially the time showed to be ** to ** mins as delivery time, But after waiting for *.* hours I sought help from the customer support they said that they are also not able to connect to the delivery partner and asked me to call.
I also called the delivery partner few times but it got unanswered, hence I asked the customer support to cancel my order and refund me.
They said that they have cancelled the order and the refund will be credited to my source account within * hours.
When the refund was not credited after * hours, I again complained to the customer support they said that because the order was cancelled they cannot refund my money.
I also mailed to the swiggy support but again I got the same answer.

From last *-* years I am using Swiggy and I never faced such issue and I was surprised that after raising the complaint several times Swiggy didn't help me when the fault was at their side.
First they make me wait so much for the food delivery during lunch time and after promising for the refund they refused to return my money. I never expected this from Swiggy and for this I will not be able to order from Swiggy anymore