Customer just called back and when I was adamant that the basket was not ours, and she clarified which basket was ours, she admitted she has sent it to the wrong supplier.  I asked if she wanted me to return the basket back to her again and she said yes, so I said I was going to deduct the return postage from her refund of the second product.  She did not sound that happy about that, but I didn't think I should have to pay a second lot of postage.

Thank you very much for your suggestions and help.