The guy possibly was an impatient drama queen and possibly would have texted you constantly about precise arriving time (ETA), etc. Considering he was the client and you the escort he should have offered to reschedule, pick you up, send Uber, etc.
Unfortunately last minute excuses like this (real like in your case or imaginary) happen both sides. I've been told by escorts about guys being called back to work 5 mins. after making an appointment, car accidents, etc.
@BrianStrowkes if you know his profile name and chatted with him go to your trash inbox and block him, also save all the texting you exchanged in case he posts a negative review, I'm sure RM will delete it. We've heard before on here "don't worry about a problem till it happens". I think it's the opposite, worry and be prepared, have a plan.