Why isn't AC air coming through all vents? on 2000 Ford Taurus

I just got my AC line replaced, and they charged the AC. I now have AC, but now the air only comes from the floor and de-frost! There is no air, or HEAT coming from the middle vents(the ones pointing to face or chest) at all. What could be wrong? Do I need to return the car to the shop who fixed the air?

by in North Versailles, PA on July 14, 2013
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2 answers 1 comment
ANSWER by , July 15, 2013
take it straight back.it is there fault...
ANSWER by , July 14, 2013
If this just started AFTER the work, possible vacuum supply line unhooked from under hood. Let the shop check it out.
COMMENT by , July 15, 2013
Yes all the vents worked before they replaced the AC line.Okay I will have them look, Thanks