@djbaxter, if you go to the GMB dashboard -> "Posts" and look in the lower-right corner of a specific post, you'll see an ellipsis. Click on the ellipsis and you'll see the option to edit or to delete.
New advertising option:
A review of your product or service posted by a Sterling Sky employee. This will also be shared on the Sterling Sky & LSF Twitter accounts, our Facebook group, LinkedIn, and both newsletters.