This is a copy of an email I received today.
I received this thinking it was legitimate in the fact it appears so. If you want to cancel you have to give them all of your personal information including your Social Security number and privacy question for security reasons. This is definitely a scam and when you try to get on to Apple to see what is going on, it takes forever and you have to wait. My advice is to call your bank immediately and make sure that this charge did not go through. I am not a person who likes Netflix. I may be the only one in the world, but I do not like it, do not want it, and I certainly would not have ordered it.
Be on the lookout for emails like this. Do not just delete when you see the title assuming that it is an ad.