I went to round 31 with a random that didn't use a mic in der riese in black ops 1, but only got there because I had a mic and told him stuff like "don't kill the last zombie yet, I need jugg again." But he was obviously the better player considering I went down 28 times and he had to revive me with the blades. But I'm saying, if you have a mic tell them stuff and they will cooperate and get you farther, but don't act like a jerk and say things like "what the **** are you doing, you ####!" then they will leave or not revive you.
Got to round 37 a week ago with my cousin spli-screen and 1 random. It started out as 4 but 1 crappy random left at round 8. You can imagine my face when I found out it didnt save on the leaderboards, because 1 guy left that early. I am put off of zombies now until treyarch fixes this.