Verbals are non-binding both ways. Coaches have been burned many times by recruits that commit early, then change their minds later. In basketball, there's very few scholarships a coach can offer each season and when they do, I think it's perfectly acceptable to expect a commitment from a player in return.
I've heard of many football coaches that have the same stance that if you take visits elsewhere, you're not truly committed to the program you gave a verbal. Michigan's Brady Hoke comes to mind. I think Texas-ex Mack was also big on early commitments not taking visits elsewhere
Meh, I imagine dealing with indecisive teenage girls on something that has nothing to do with coaching basketball can be very frustrating for all college coaches. It could very well be a story at any major program. We're OU/We're UConn/We're Stanford/We're Baylor/We're Tennessee. We aren't someone's second choice. Stick with your commitment, or we'll both be moving on.