You're going to have to do some calls. Phone calls. Here's a technique to make them less stressful for you and your clients.
Actually delivering for the customer is the strongest way to build your brand, and for that, sales and operations must learn to get on.
One of the handiest things I ever learned came from a chance meeting with author Bryce Courtenay when I was a clueless wannabe. His one tip fixed a ton of rank amateur moves I was making.