Sounds like the door lock won't unlock or possibly your washer isn't draining correctly.
When you get the door open (I usually hit around the door lock to do this) if your clothes are still soaked check your filter clean that out if they are wet as normal then you can pretty much guarentee your door lock is knackered.
howtomendit.com for free repair help, information and advice.
Try fixfault.com to fix washing machines.