No Timeouts Left

[Simbio]

I saw this last week:

At the end of the first half, team A is trying to get on the scoreboard. The clock is running and they are out of timeouts. Team A calls a timeout trying to stop the clock and the wing official, thinking they still had a timeout, kills the clock and tells the Ref his sideline has a timeout.

Now, I know the proper procedure would've been to ignore the timeout request, but since the wing had killed the clock with 8 seconds left (and the clock was rolling) what is the proper procedure at this point?