Swiggy — swiggy issue

Address:	H.no 81,road no 4,reddy colony,chandanagar,hyd, Hyderabad, Andhra Pradesh, 500050
Website:	Swiggy

As they said they have initiated a refund amount of 174 to my upi, i didnt recieved any amount of money, waited long for two days, raised a conplaint in swiggy, they simply said that we have refunded amount from our side the problem is from your side and ask upi customer care with the id provided,

Okay ive contacted my bank with the id provided they said there is no refund initiated with that id.

Here im confused whether india's (Upi) payment mistake or the swiggy's

P. S :- although it is for only 174/-, what if it is for 2000 and more