Questions About Phone Agent Limits, Plan Features, and Using Existing Support Numbers in Lindy Workflows

I am on the Pro plan and have created a couple email responders. I was looking to create an phone agent and while looking at the site I have a couple questions. The first is the page says that there is a 30 call per month maximum on the Pro plan. When I went to check the pricing page there seems to be and elimination of the Business plan, which allows unlimited phone calls. What is the current feature list for the different tiers? I have an existing support phone number on Ytel. Is the only way to use that number to forward it to a new Lindy number or can it be used directly in the workflow?