Hi. Welcome to JA.
Please provide the model number of your unit......Duh! Yea. Door locked, number is XXXXX door. Sorry.
Is this a Cabrio model?
Ok the information you provided is the model number.
Unfortunatly there are no provision for opening a stuck door lock except disassembeling the unit to replace the part.
Apparently these models are known for this problem. I read a couple posts on the internet, but no resolution except replacement was available.
You can order the part by clicking here. I strongly recommend that you call for a qualified technician to do this repair for you. It is not a repair that I recommend a novice DIYer attempt.
Sorry for the bad news, but I can only report what I know to be true.
Please advise if you require further information.