They can possibly repoen it within 30 days or something.
My DF closed her Dell card that had a 5k CL because their CS sucks. I told her to call back and try to reopen it, as she'll take a hit to her Util%
She called back and they told her they can reactivate the account, so long as it was done so within 30 days.
YMMV
Starting Score: TU:650 - EQ: 672