I actually pay close attention to this service. You can contact the help desk if you feel the article was such low quality. Keep in mind that you get what you pay for. If you pay for only the minimal service, you'll get an SEO-quality article. If you add services and fees (research fee, 4/5 star writers only, expert author fee, etc.) you'll get much higher quality.
I keep a close eye on the quality going through INA. We get hundreds of orders a day so I have to. If you have an issue with quality, the help desk is there to assist you and refund you if need be.