Telecaster3769

Hi. This is my first post. I have a 65 plate c4 Picasso. One night it took 20 attempts to shut the door. When driving the car the drivers door just opened and all the alarms in car started going off. This has happened on 5 drier ate occasions. Took to Citroen and they said that their technical dept had been on a course for this problem ?? Has anyone else experienced this ? No word from Citroen gir such a serious fault.