I do a bit of work now and again on a native Irish language.
Today someone from a national group, associated with the language sent me on a file, open to it being shared etc.
It was my own, lesser known work from about five years ago.
I questioned it as being the wrong file.
The person who works on this aspect, said 'perhaps' but wasn't sure if it wasn't the wrong file...
I sent them on confirmation that what they had sent me, was my work.
Got a LOL and was then the sent me on another file.
In which was also directly and painfully obviously derivative of my own work, from concept to typography decisions, regional variants etc.
I've let them know ill be following up with them on Monday - but the utter gall of some people.