I note that Sports Direct seem to have a different refund policy to major retailers by only giving refunds by credit note and not actual refunds. You would normally find this in small independent shops but not what you would expect from a major chain of retailers.
I got stung when I bought a fleece for me OH and it was not the correct size but they did not have the correct size for me to swap with so all they could offer was a credit note.
That is a surprise to me as I had always expected them to have the same refund policy as other major retailers.
Lesson learnt. Never buy anything from Sports Direct unless you are certain you won't need to return it.