Yes, this idiom is very much in use today. You can say that a person or a thing that gives you trouble is a pain in the neck, eg:
- Having to convert my accounts from dollars to euro is a real pain in the neck.
- It's a pain in the neck having to delete all the spam in my email.
- John's being a right pain in the neck. Can't you tell him to go away.
See more about a pain in the neck, and a mini quiz, in out Idioms Reference at:
http://www.englishclub.com/ref/esl/Idio ... ck_472.htm
