fold or call

[Big bibi]

This hand was played my a friend of my and we argued about his play, so we want a second opinion.
10 usd MTT, 15 places till the money.
blinds are 1500/3000, no antes
hero has 55000 chips
action:
EP player goes all in with 20000
next player goes all in with 22000
third player goes all in with 23000

hero calls with KK

I said that this is a sure fold.
What do you think???