Disappearing escort

has anyone ever had an escort they have been seeing just disappear?
We've been seeing each other on a regular basis and he has always texted quite swiftly and we have had open and honest talks and availability on whether we are busy or not.
But after texting him the day of to meet the same night, he just suddenly disappeared and hasn't responded since.
His ad has been not active and I sent a message to voice concern and just to make sure he's alright.
Anyways just wanna hear your thoughts.