Company dragging feet over a raise. Is it time to find a new job?

I'm part of a two person data science department that handles all the DS tasks for a hospital. We had a third person but they recently left. We were asked if we could handle every thing between the two of us. We agreed on the condition that the third persons salary was split between the two of us. Management agreed at the time. This was a month and a half ago. Recently they've started dragging their feet and wanting us …

data data science datascience every hospital job part person science tasks