Hi, thanks!

I just loaded model and texture file.
The model has only triangular faces, so I guess you imported it from somewhere else?
Looking at the UV-Map in the editor it shows, that the UV's have not been laid out.
The faces laying on top of each other. I did a screenshot. The picture shows meshes with red, blue and purple surfaces. Means the direction of the faces normal is different (blue is one orientation, red its the opposite direction), where you see purple you have overlapping faces.
I would recommend
1. Check some youtube courses for UV Mapping. For example https://youtu.be/HLhazEa8wmw.
2. I hope you have the bonus tools for Maya 2016, which comes with a helpful tool for unfolding the UV's. If not you should load it from Autodesk site.
3. Try to remodel or re-export with 4 sided faces only. This makes the model more clean and workable esp. also for UV-Mapping

Hope it s, best regards and MERRY CHRISTMAS!