I've been at my current job for 2 1/2 years. About 6 months in, one of my team members left and I've been filling in for the role ever since with no additional pay, title change or benefits. The job that I took over has a completely different skill set than mine and I struggle to find joy in what I do. I've expressed this to my manager and they finally posted the position back in January. However, due to COVID-19, the position has been frozen and I'm back doing two roles still. I'm starting to feel unvalued, unappreciated and unmotivated. With no light at the end of the tunnel, I feel like I'm becoming a very transactional employee- something that I'm typically not.
At what point do I throw in the towel and have the difficult conversation with my manager about this?