Customer service

I bought few items on the 1st of August, know 1tem is too big and one is not suitable. I went to exchange both items and one item was changed and there other was not because they say its not on the receipt, I did not pay for them however on my receipt there's one item that I do not recognise and its the same price with the one that I'm returning, meaning wrong tag was on the item. Customer service checked the footage of my purchase and came back saying i did not pay for the item so there's nothing they can do. I asked them to play the footage for me and I was told that is not possible. Know I'm stucked with the Jersey i paid for and too big to me. So if I did not pay for the item why did they gave it back? Why did they refuse to play the footage for me? I'm so disappointed and angry at the same time. Nw I see what people are saying about H&M.