I used to be a molecular biologist....someone who actually isolates, replicates, splices, clones, and transfects DNA for a living. I went to Harvard and studied molecular biologist with the best in the business. I ran a huge early phase drug discovery lab at Eli Lilly.
Let me tell you, this kind of service is complete GARBAGE. I'm not going to write you a book on why that's the case, but believe me when I tell you, the absolute BEST an "ancestry" company can do is guess as to your background/make-up.
I told someone (my father) the other day, as he was asking me about these types of services: you might as well go to a palm reader or psychic and ask them.