Yup. This is the boring but likely true response. You get the one Gareth/Dwight who remembers that memo about not using trademarks in marketing materials and decides they know how this all works and that the rights of Warner Brothers have to be respected before putting their intellectual property on a published document. “Just get the appropriate permission on corporate letterhead and notarized, and this will all be fine.”
Social media is one way to fix it, but I tend to think a couple of layers of escalation would have worked as well, if a bit more slowly.