Swiggy — refund of rs.450 not processed

Address:

Swiggy online, 560091

My friend ordered food from mcdonald's viman nagar pune on october 8th
Not only did the delivery guy cancel the order which was prepaid he denied service
They promised to refund back the money which i paid through upi transfer in 2-4 days
Every time we check up they have the same reason but don't give a #
We are helpless right now not knowing what to do or whom to contact
I will add my bank details where i've been debited by swiggy but not credited with the refund amount