If you haven't been credited for photography in a BowerKit, or you've been mis-credited (you've been attached to the wrong BowerKit), you should contact the owner/contact person of the BowerKit. This in most cases will be your client and you will need to contact them directly. 

If they are non-responsive though, please notify BowerBird support of the BowerKit in question by sending a link and/or name of the project and we will contact the BowerKit owner.