Alright, so this tactic I learned from my good friend Mr. Morgan J. Ingram. Go follow him if you're not already. This is a winner! When you have a great call with someone, before you hang up, say this with a little chuckle: "No matter what happens, let's agree not to ghost each other, okay?" They chuckle, you hang up. The deal moves on. When/if they ghost you, send an email and the subject line is the ghost emoji "👻" (nothing else) The body of the email is: "Are you ghosting me?" The reply rates are bananas. try it out. Works a lot!