Firing doula.

Heath • Pregnant with second baby. Daughter is 2. Married for 5 years.
I am 7 weeks out from my due date and today I am going to fire my doula. Yesterday I went to a birthing class she was leading that was falsely advertised. I thought I was going to learn how to deal with some fears I have and things that intimidate me about giving birth but instead it was a lot of dancing and things that I know are not based on science because I have read the studies. But that is not why I am firing my doula. 
A lot of the exercises were based in a religion not my own and it made me uncomfortable. So I told my doula during the lunch break I was not comfortable with the class and I must have misinterpreted the description ( even though I know it wasn't advertised clearly ). And she did so much to try to get me to stay. But even that is not why. She later texted me wanting to know why I didn't stay for the whole thing. I went into detail and was very honest. She asked if she could call in the evening and I had already made plans so I told her I would call her the next day. But she could not stay away! She still tried calling and then texting and then when I reiterated I would call her the next day she asked if I was considering firing her (I hadn't even gotten that far in my thoughts! ). Again I had to tell her I was going to call her the next day. After all of that I felt like she wasn't capable of hearing me and respecting my boundaries and I don't want that in my delivery room. 
What would you have done in that situation?