cold shoulder

[cold shoulder] {n.}, {informal} Unfriendly treatment of a person, a showing of dislike for a person or of looking down on a person. - Used in the cliches "give the cold shoulder" or "turn a cold shoulder to" or "get the cold shoulder".

When Bob asked Mary for a date she gave him the cold shoulder.

The membership committee turned a cold shoulder to Jim's request to join the club.