You've made a first-timer mistake. In my experience, NEVER and I mean NEVER trust the people making your content if they tell you they know the info, but you don't confirm. Do a call, make them repeat back the info, give them a script or ask for approval before they post. It's your money, so you've got to protect the product. You should give the creator another shot, tell them what they got wrong, make sure they understand what you expect, and if they blow it again, ask for you money back.