Yes, leaving the flat almost always works!
My phone is quiet today. I have had a half hour. I supposedly have an hour at 3 but I'd say the odds of him showing are roughly 50/50. On the one hand, he sounded very reasonable and had a kind, confident voice. On the other, he told me that he has an extremely small penis and so penetrative sex wouldn't be possible. I have seen micropenises before so it's perfectly plausible. And he didn't seem intent on lingering on the phone and talking at length about his cock. He seemed to be telling me sort of in the way one would hope to be warned about a colostomy bag (although I don't think a micropenis warrants warning, really.) But I do tend to think that anyone who talks about the size of their cock is a time waster.
This could go either way! On a busier day, if I'd gotten another booking, I would have bumped him with an apology and explanation.