Facebook Funnel

Question: My Facebook funnel has been working really well as far as booking discovery sessions. And I have hit a road block as far as those sessions not showing up. I want to say I have tried many things over the last year, and I am stuck with figuring it out. I have modified my copy on the booking site and the lead page. I have added an input form. I have had them call in to a meeting room & I’ve called them. When they don’t answer I message them and call them again. It all seems really hit or miss and I don’t feel like I have any consistency with my numbers. Not sure where to take this.