ACUPUNCTURE: Am I Being Scammed?

I made an acupunture session with a recomended...

I made an acupunture session with a recomended profesional for a face wrinkle and a general face skin condition. But the point is thar he only put some needle on my ear (5 or so) and some kind of sticks in the other ear that contain a micro metallic ball.
He says that the ear has the map of the whole body nerves of the body and that there is no need to put it on the face.

I see no sense on it specially when I see cosmetic acupuncture uses the needles directly to the skin.

What do you think? Is it another way to do it or I should start thinking about leaving it?
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