Being let down?!

Don't panic, there is often a perfectly reasonable explanation to these situations. From the timings it seems you are (understandably) posting in the heat of the moment, but chill out and reassess in the morning. I'm sure he/she will apologise.

As a bloke, I would advise to simply be careful with him. Don't accommodate his every request, make him see that you won't just be a drunken plaything or whatever for him. But this let down sounds at the moment (i.e. without an explanation from him) like the actions of a dick. You've every right to be hacked off here from what you've said, don't go out of your way to let him know that but also don't overlook it. Don't text him first tomorrow, let him apologise. If he doesn't, perhaps give him a 'wtf' text. But it seems he's out of order, so don't let yourself forget that.

Definitely stop worrying about it tonight. By tomorrow evening, you'll probably wonder what you were so worried about. If you're right about him, then there is no reason that he won't have a valid excuse, however if you've come 100 miles to see him and he's done this then I'd be slightly worried...let's be honest, how long is 'no signal' really a problem during a night? I really hope you haven't gone 100 miles to see him and he hasn't replied to where to meet. He has a lot of explaining to do if so.