Your car should be still on warranty, call your dealer and let him to have that headache.
If you do not have warranty for your car. You have to remove the panel covering the belt assembly. Most likely you will have to replace it.
Put your seatbelt on. Should be an easy fix.
Once a seatbelt starts sticking its gonzo and needs to be replaced.
Check for a blown fuse.
There can be several things causing this. Take it to an auto trim shop.
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in ford f150 the u-jounts on the steering shaft get stuck. Use WD40 to help loosen them. Toyota camry's too!
rephrase that
To fix a seatbelt that won't pull out, make sure it is not twisted. Jerk on the belt gently and let it retract before trying to pull it out again.
A seat belt in a Saturn might be stuck because there is also something else stuck in the latch. Use a small pin or crochet hook to probe around the outside part of the latch. Once the seat belt is unlatched, clean it out with tweezers and spray both ends with WD-40.
I had the same problem and after a long time trying to fix I'V found that the wire harness in the drivers door was broken. Hope this helps you to look forward.
To fix it I would recommed taking it to your nearest Ford/Lincold/Mercury dealership. If it is stuck forward however..... Where the belt should be in the driving position there is a screw, take it out. There is a manual override in there, turn it clockwise until you can move the belt to the proper position. Spyder