You have nothing to worry about. Those bats will not attack, get tangled in your hair or give you rabies or anything else. Those are all myths, and need to be dispelled.
Truth is you can get rabies faster from mice.
Bats actually are a huge benefit to you and your gardens. The bat guano is the best fertilizer available. And a bat family will eat 5- 10 lbs of bugs a night...this includes mosquitoes.
If you get rid of the bats...your bug population goes up 10 times as fast.
Most folks try to get bats to move in. You just need to buy a large bat house, and get them to move by taking down the shutters for a week or two. They will find it but it needs to be big enough.
Truth is , they are staying, they will just move into your house through the vents next.
You should learn more about them before you rule them out.
I once felt the same way, then I realized how much of a benefit they where.
Don't be afraid...you will be fine.