No receipt no exchange policy is disappointing.

I am so disappointed and frustrated with Mr price. I bought some items a week back,for me and my daughter.Got home and realised they do not fit and unfortunately had lost the receipt. When I went to do an exchange they refused to take two of items,one belonging to my daughter, as I didn’t have the receipts. Now I have to sit at home with items that don’t fit us. I thought the price tag would at least serve as proof that it was indeed purchased there.Wow the service at mr price is becoming more and more disappointing.