Listing Internship w/ peculiar situation

I landed a top internship with a company but as soon as I arrived for training, I realized it wasn't for me. Due to the fact that I was accepted at a young age (younger than their average) and the fact that it is a competitive internship, I want, and find it relevant, to list it as an accomplishment on my resume. Specifically applied, I "quit" after I was trained to partake in unscrupulous sales practices. Any recommendations on how to list this under experience? Thanks.

I think I have been there.
Ideally, what you put on paper should not allow others to rule you out, only to contact you for an interview. I think you could simply call it what it was for you; you garnered a top internship. Do not offer anymore info. on paper about the experience. Also, ask for other opinions of those in your intended field. You hold yourself ethically responsible; this is truly an outstanding business trait today.