Obgyn forcing me to have ablation surgery for endometriosis

My Obgyn and I where talk about endometriosis surgery. I told her I wanted excision surgery. She told me she didn't know what "excision surgery" was and that there is only one type of surgery call ablation surgery. I told her other Obgyn have told me that ablation surgery burns the Endo, makes scar tissue, and comes back in 6 months to a year. Excision cuts the root and last longer. So then my Obgyn told me that's not true excision surgery doesn't exist and that I need ablation surgery. I felt forced to sign for ablation surgery. I'm so confused on what to do.