Is Broccoli Rob dead?

Question

Broccoli Rob dies in season 7 of The Office:

Andy:    Ooh, says here Dan Becker fell off the side of Kilimanjaro in a
         climbing accident. It appears Dan's Sherpa survived to tell the tale -
         Oh, my God!
Phyllis: What? Is Dan okay?
Andy:    No, he died. It's Broccoli Rob.

but then he texts Andy in season 8:

Andy: I just got a text from Broccoli Rob - "Boo!" Scared me.

and he is seen again in season 9, played by Stephen Colbert:

Broccoli Rob: I just-- I just started yappin’ about the old days, and I guess
              the wine coolers were flowing, and, you know, somehow things just
              got hinky.

So, what happened here?

Answer 1

It seems you simply misunderstood the quote. Here's the full quote:

Andy: [reading Cornell magazine] Whoa. Libby Dirketts got married. Big Red mazel tov to the Libster. Ooh, says here Dan Becker fell off the side of Kilimanjaro in a climbing accident. It appears Dan's Sherpa survived to tell the tale-Oh, my God!

Phyllis: What? Is Dan okay?

Andy: No, he died. It's Broccoli Rob. You know this guy; I showed you his picture on Facebook.

Phyllis: Yes.

Andy: "Some Vermont-based alums can hear 'Broccoli' Rob Blatt, '96, in the state milk lobby's new milk awareness song, 'Calci-YUM!', featuring Phish's Trey Anastasio. Says Broccoli, 'Trey and I had a ton of fun in the studio, and I think you can hear it in the song.'"

Phyllis: Oh, that's great news for your friend.

Andy: Yeah, yeah, it's great...

"He died" refers to Dan. "Oh my god!" refers to the next story about Broccoli Rob, which is deemed more important for comedic effects.