Non-fiction book review editors rarely have the time to vet new reviewers properly, aside from reading your CV and publication history. Also, they only have so many capable writers in their stable and it could well be they went with the first guy available. The publication I'm currently working with will order titles that I suggest to them, but this is a privilege earned over time. Letting them know a reviewer dropped the ball might help them to better evaluate using a particular reviewer again - at least for certain subjects. Regards Peter M - a freelance book reviewer.