I can't see that you would be calling the PB lazy when he's already responded to your e-mail and says he'll send someone out tomorrow to fix it

... Oh, I get it, the bead coming out :lol:
It happens fairly frequently and for a few different reasons.
#1 is that the liner wasn't fully tucked in to begin with

If you go out and look at the bead where it's popped out, you should notice a barb on the backside of the bead. It's possible to install a liner bead that looks like it's all the way in place (the barb locked in) but needs another ~ 1/ 100" to be all the way in and fully catch. I can feel when it catches but someone who is new to installing liners (or doesn't have 20 years experience) might not - no biggie it's easy enough to fix, it'd be better if it didn't need to be fixed, but no harm is coming to the pool nor liner by having it slide out a little for a couple of days.
#2 the track that the bead attaches to is either warped or ants have built their colony in the track and bumped out the bead. With a warp, usually found in the corners where they have too bend the coping, a little liner lock solves the problem. Ant colonies need to be cleared out before the track will accept the bead again.
#3 the liner floats due to water build up under the liner and the bead pops out - liner lock will help prevent this, but you've gotta take care of the source of the floating liner.
I hope this answers the question, if not - just let me know and I'll try it again
