I bought several things from Boden but only liked two of them so sent back the bulk of the order. I liked the two skirts I kept, but it's been a month and in yet to wear then as I can't find a top that goes with them. Can I still return them even though I sent the receipt back with the first batch of returns? And if so, how do I do this? I've stupidly taken the tags off but the skirts are unworn.