You can test the wcf service first using the WcfTestClient tool. It is however, always a pain to find because m$ likes to keep people busy with trivial tasks like searching for files, settings, virusses and trojans instead of handling those for you.
As a hint you might find it somewhere here:
C:\Program Files (x86)\Microsoft Visual Studio 12.0\Common7\IDE\WcfTestClient.exe
C:\Program Files\Microsoft Visual Studio 9.0\Common7\IDE\WcfTestClient.exe
Visual Studio required of course!
https://msdn.microsoft.com/en-us/library/bb552364%28v=vs.110%29.aspx[
^]
Good luck!