Getting an appointment is almost impossible

Getting an appointment with my doctor is almost impossible. She said to see her again in one month but since I saw her on the 27st of the month I have to wait to call for an appointment on the 21st of the following month and than get an appointment for the end of the next month and only if I get lucky and they have room for me. what kind of system is that???? (my appointment will be in 2 months if I am lucky)
The reason they gave me was they didn't have the new schedule...????????? the staff s....ks big time.. they don't even look at you when they talk to you.