My car is not braking properly and I drove it in f...

My car is not braking properly and I drove it in for service this morning. It took almost 15 minutes for anyone to speak to me, and then I was told I needed to schedule an appointment because they were "too busy today." How am I supposed to schedule a malfunction of my car in advance???!!!! This is not the first time I've had problems (my last routine service appointment took two days). I'm buying a new car this year, and it won't be from First Texas Honda. Assuming my brakes don't fail on the way home today.