I was going to ask the same thing, lol...or maybe I'll just ask Bob on the boat in April!!!
With all merchandise inquires, it is best to contact the webstore directly. Along with a description of your issue, please include the name and email you used to place the order and an invoice number if you received one.
Check the FAQs page to see if your question has already been answered: http://kidrock.shop.livenation.com/Help.aspx
Contact the store directly by emailing: email@example.com
Hope this helps!