I'd like to what's the slight difference in meaning between I refuse and I'm refusing. For example:
I refuse to work this Sunday.
I'm refusing to work this Sunday.
I'm aware of the difference between the present simple and present continuous. But, in this case because of the use of the verb refuse and the context, the difference isn't clear to me at all.
I've looked into the subtle differences between the tenses and looked for an answer on the web but couldn't find anything that answers my question.