UI/UX Designer/Developer doing graphic design work? [closed]

I am a UI designer/developer working for a small software company. So I am the only designer of the company. Often (and sometimes all I am working on at the moment) I get asked to work on documents and powerpoint presentations to be presented to clients. I also recently got asked to do a lot of print work. All of these things are things i've never done or normally do in any other other job as a UI Designer which i've been doing for a number of years now. I want to be working on the software, looking at new ideas for that, building wireframes, designing for it, developing the front end for it etc..

Am I in the wrong to be a little frustrated to be working on these things on a regular basis? I guess I'm developing new skills but its just not what I want to be doing. Or is this just part of the role and I should stop moaning?