Dental Health Bus (Temp location)

I came to the dental bus for a tooth extraction, but they wouldn't do it. I need all four of my wisdom teeth removed, and I told them that I didn't mind having one done at a time, and keep coming back. Instead, they gave me a referral to an oral surgeon and told me that I would likely have to pay for all four of them to be removed. They did suggest a Hamilton program but said they usually put OW people at the top of the list, so it's unlikely they'd cover it for me. I'm already low income, but with Covid I'm doing even worse. I can't afford this, why wouldn't they even remove one?