I want to hit someone and my husband wants to jump out of the window

We lived in Parsons Green in London, UK in a small studio. Above us was a larger flat which was inhabited by a large group of girls from Australia. To get to the larger flat on the top floor you had to go through the main entrance and take one flight of stairs and pass outside our door and then yet another flight of stairs. Really late at about 01:00 o´clock in the morning we heard the girls tipsy, giggly and laughing waking us up when they passed outside our door. Shortly there after we heard someone knocking on the main entrance door. The girls laughed hysterically and chatted away upstairs. They did not open the door. Suddenly someone broke into the house and smashed the glass on the main entrance door. We were wide awake. The girls screamed and then there was silence. We had understood that some guys had followed the girls home after the pub and they were not allowed in. They got angry and had crushed the glass on the door. As they did not know on which floor the girls lived and the first door was our we were of course scared as the first door they would try to open was ours. We listened and waited. As they only needed to reach inside and open the lock. I grabbed a chair to hit someone with if they tried to enter into our studio. My husband stood by the window ready to jump out of the house into the backyard so he could run away. What a funny sight! The girls sneaked downstairs to check what had happened and when they saw the mess they ran up again and their voices were not so happy anymore. We understood that the men had left and were not going to enter the house. The next day we spoke to the landlord and explained what had happened. Later on we heard that the landlord had thrown the girls out as they had also disturbed the neighbours.