"Didn't listen"

I might as well have been talking to the wall. Because I don't fit a straightforward bill of health,(my health is complex but not life threatening) I felt I was written off fairly quickly. I have various intolerances & struggle with chemicals, hence fluoride does not like my body and gives me severe cramps. This I explained but was still told to find a fluoride toothpaste I could tolerate! It won't happen. I don't drink or smoke, I'm not overweight, nor do I eat sugary stuff all day or drink fizzy drinks, as was inferred! I clean my teeth well at least twice a day, always have, which clearly wasn't believed. They clearly had reached their level of knowledge and experience and didn't want to know. The fact was my teeth deteriorated rapidly after a hospital operation for something else. I went for help, not a miracle but !