So from what I can tell, I cannot really say if you got actually scammed or not. I would say the artist just did their own interpretation of your character into their style, and from your art received and their examples I would give the benefit of the doubt and say "maybe this artist experimented with my commission". However here are some questions I want to ask that perhaps can help to determine if this artist did scam you or not.
-How long did it take them to complete your commission right after you payed them the money (or did you pay the money after they were finished?)
-Did you and the artist communicate? Did the artist send updates, WIP (Work In Progresses) often, was honest and transparent with you with the business?
-Did they state on their commissions post that they are experimenting with their artstyle or not?
Edit: Wanted to ask a few more questions!
-Did the artist ever say that their examples are older examples of their art? Or did they say nothing at all?
-Did they give you a time frame of how long the commission will be worked on on their commission post/website/whereever you found them? (Like for example and artist may say "my fullbodies take (insert a number of hours)")
I hope you can get this sorted out! And feel free to ask me to clarify anything if you do not understand as English is my first language! ^^