I agree that being able to communicate verbally is a basic requirement for a call centre operator but criticising someone for poor verbal English is a bit rich when some of the written English in the forum is so poor.
I know it's considered impolite to point out poor grammar or spelling in a forum environment and typos, informal style and quick posts aren't an issue but those in glass houses shouldn't throw stones. If they must then it would be worth using the spell checker - although that wouldn't pick up their/there type errors.
Just being too picky, probably!
Must get a life!