Not happy, Jan!

"Not happy, Jan!" was a line delivered by comedian Deborah Kennedy in an Australian television advertisement from the year 2000. Due to the ad's popularity in Australia, the line entered the cultural vernacular as a catch phrase used to express a feeling of discontent.
Background.
The television commercial from which the phrase originated was created by advertising agency Clemenger BBDO Melbourne for Sensis (the directories arm of Telstra), to promote the upcoming deadline for advertising in Australia's "Yellow Pages". In the commercial, a businesswoman (Kennedy) has just discovered that one of her staff (Jan, played by Rhonda Doyle) has neglected to book an ad in the upcoming year's "Yellow Pages". Realising they will have to wait another year, she calmly goes through some anger management techniques. When Jan runs away from work, Kennedy's unnamed character talks to herself and counts to ten before opening the window and shouting "Not happy, Jan!" towards the fleeing figure of Jan. The phrase was coined by Kennedy on the day of shooting. The ad ended up becoming lucrative for Australia's "Yellow Pages" with the words "Closing Soon. Call 132378" appearing on television from 2000 to 2003.
Since the advertisement, "Not happy, Jan" has entered the Australian vernacular to express displeasure, particularly at a problem caused by another's negligence or incompetence. In the time immediately following the advertisement, it was usually said in a manner which mimicked the advertisement, but today is usually spoken with a casual, slightly stern tone. Women named Jan were particularly targeted.
The phrase was co-opted by the unsuccessful 'Not happy, John!' campaign, opposing the re-election of Australian Prime Minister John Howard in the 2004 federal election. The title of the campaign also became the title of a book detailing the negative aspects of the Howard Government.
Both "Not happy, Jan", and "Not happy, John", are common noms de plume used in short letters to newspaper editors.
The commercial was featured on a 2005 episode of the Australian TV series "20 to One" as one of the best Australian commercials of all time. The catch phrase "Not happy, Jan!" was also rated as best catch phrase in Australia on the similar TV series "The Spearman Experiment" in 2009.
The characters were relaunched in 2019, with the ad duplicated almost shot-for-shot, as promotion for the re-launch of Darrell Lea chocolate. Sensis sent cease-and-desist requests to Darrell Lea, their advertising agency Akkomplice and the television stations broadcasting the updated commercial.