I can relate. That is scary! I like bees and wasps outside like they are suppose to be but not in the house!We had a bunch of ginorourmos wasps that looked like yellow jackets on steroids flying in and out of a crack next a window in our back room. I climbed on top of our van and sprayed wasp spray into the crack, good thing it was one of the ones that spray like ten feet. It was a battle for a while but after soaking the ones flying out there must have been fifty coming at me and I ran! The wall sounded like there was hundreds of them in it and they were getting into the house so we bug bombed the room and left for the day. I thought they had to be killer bees, but they were actually not very agresive so we think they might have been European Wasps, they were two and a half inches long. I sealed the window up with spray foam that bugs and mice won't chew through, has something in it they don't like, costs more but I didn't care lol. And then calked it.