Can't say I've ever been given a wrong number or had a woman not answer... But then again, I haven't had to date anyone new in 16 years. What I got was "sure, let's go out" and then she would be "busy" every time I tried to ask her out. Or the "I have a boyfriend" line, which you can never tell if true or an excuse. I'd say over half the girls I dates asked me out though, so not much risk of being given a wrong number in that scenario.