Actually, I fixed your grammar and sentence structure in places. In others, I pointed out sentence fragments which you could fix on your own. If you want to bust the chops of this person based upon the grammar they [Noun-pronoun agreement problem. Since the noun is singular, the pronoun must be singular. Use "his" or "her" or "its" with a singular noun.] used in their [Same correction as above] ad, I think it is good form to at least be able to articulate your dismay without falling into the same pratfalls you indict someone else as having committed.
Sorry; no one is perfect.