A BAT IN THE HOUSE!

Last night a bat got into our house. My daughter & I were watching a movie and SUDDENLY we saw a bat flying around the living room. We screamed and ran outside. I held the door open hoping it would fly outside, but every time it came near the door I screamed, but I didn't want to lose sight of it and have it go upstairs and not know where it was. My daughter had her cell phone so we called a few people and finally a friend came over and hit it with a broom and put it outside. I am still freaked out about it. Does anyone have any suggestions on how to get rid of bats in case there is a whole family or village of bats here.