This is happening nite and more and in fact happened to me last night at SFO, except instead of the driver just telling me to cancel, he made up a story about being in an accident. So I took a taxi, waited him out and he finally cancelled.

These services are turning into gypsy cab, where the full time people are as bad as the worst scammy taxi guys, new people don't know what they are doing and every once in a while you have someone who knows their area and isn't trying to scam but they seem to be doing it just for fun.

I'm back in regular taxis more often than not anymore