My husband and I bought a 87 nissan stanza this afternoon. When we got out of the car at a restaurant, we locked it. When we returned we found that the key would not open the drivers door. We opened the passenger door just fine. After several attempts with pressing the power clock nothing worked. We tried pulling the lock up with our fingers to no avail. The door is locked and won’t open. Can you help us? What is going to have to be done to get this door open, and repaired? What kind of charges are we looking at? Thanks