How much longer until Quiznos is completely out of business?

Filing for bankruptcy doesn't automatically mean they will cease to exist.  They may be able, with the help of the court, to reorganize and keep operating.  You'll have to wait to see.

I haven't seen an open Quiznos anywhere I've been in quite some time.  The one time I ate there, it was like eating at a salt lick.

I like Quizno's but the closest one to me is 88 miles away but even though I like them I don't like them enough to drive 88 miles just to eat there.  I actually like them better than Subway but the reason Subway's kicking their butt is because when Quizno's is closed the Subway across the street is open.

Anyway, I looked up their business hours (Quizno's closest to me): 10:00 a.m. to 7:00 p.m. daily

Subway down the street from them: 7:00 a.m. to 10:00 p.m. Monday through Friday and 8:00 a.m. to 10:00 p.m. on Saturday and Sunday.

Umm, yeah Quizno's, maybe if you'd go to work a little more you wouldn't be going bankrupt, lol.

I didn't know they were having problems.
I like Subway better anyway.

At first I wondered if that was a user name here, but then I began to remember vaguely that there used to be a pizza joint or something by that name. I never went there. I went to Subway when I was hungry.

have no idea

No one will even notice.  Overpriced and underwhelming food choices.