I've never sent birds for processing but I'd assume it is a lot like everything else. Different people do things differently. I don't know that there is a standard. Did you get the gizzard, heart, or liver back? Some people like those pieces, some don't. I process my own and use them all. I'd expect to get the giblets back but maybe some people don't want them.
Your first time is a learning curve. If this causes you any concern, now you know what to talk to them about before they process any more for you. It takes time and maybe special packaging for them to cut the neck off and give it back to you. Don't be surprised if the price goes up if you put in special requests.