He is obviously sending out texts to all his clients in that area. I doubt he is sitting by the phone dwelling over each client. If he doesn't hear from you I doubt he will even notice. If you block him be will not be aware of it. There is no notification he is blocked.
i, too, don't like lying to the escort. Also why give a song and dance that you're no longer interested etc. Lots of drama here over a small thing.