Even if you weren't trying to be rude, that was very rude! Just because they can't think of a title doesn't mean they won't be published! Most authors don't come up with a title for their book until it is over. It is rare if they do and if they do they most likely will change it dozens of times by the time they finish the book.
We'd need more information on what the book is about, Anessen. A general title isn't going to work out the best. We'd need some sort of synopsis/storyline to come up with a title that actually matched the book.
Perhaps you should add a good informative page of the book in a blog post, and ask for a title there.