This can happen when the bank issuing your credit card finds our brand name a little too unconventional and declines that transaction attempt to protect you from fraud purchases.
Please try calling your bank and confirm that the transaction for Dirty Boots & Messy Hair (and any future transactions with our company) is intentional, and they will allow it go through on your next try.
Another option is try paying via Paypal if you haven’t already. In our experience paying via paypal always works.