What I hated about group projects was "you need to learn to work in teams. You'll be working in teams in your jobs in the future." "Prof, you're ignoring one thing: in college groups, if one person does absolutely nothing, doesn't show up to meetings, etc., the rest of the group has to pick up the slack & that individual shares credit for everything that was done. In the real world, that slacker is fired."
RBSX, sorry, I suppose I agree with you for the most part, based on what you've said, but there's two sides to every story. This particular quote of yours seems rather damning though: " when I spent the 5 previous days emailing them trying to obtain information necessary for me to write my part of the report." That either says that you didn't know what part of the report you were supposed to write, else it says that you seemed to think that they were supposed to do the research for you.
One of my favorite parts of group work in college was leaving a member of the group to hang. 4 people, presentations, and before the presentations, a note to the professor, "member D did absolutely zero of the work." Then, member D, who was so lazy that he didn't even pre-read his part of the presentation, attempts to read it in front of everyone... and can't pronounce half the words. 😀 He looks stupid in front of everyone else; and professor credits the rest of the group for doing all the work.