I do not generally leave a service for any reason, although I have been annoyed enough to take a journey myself (not saying why or whether I believe myself entirely justified in one instance, just making confession). My only gripe is when I am told that he is 'closing' and an hour later we are now to our 500th 'in closin'.
Bro. Martyn Ballestero (a very conservative preacher) made a reference to some of these type of things on his blog. One of them mentioned that you have time to read
Psalm 119 entirely after he says, "In closing."