At 19-years-old, Justin Bieber has a lot of life lessons to learn and one of them is about being prompt.

took
Twitter

MTV

According to SugarScape, many parents are fearing this is not an isolated incident and are selling off their tickets at incredibly discounted prices for Bieber's show tonight (March 5) at London's O2 Arena.

The 'Beauty and a Beat' singer did apologize, though he placed some blame on the media for his lateness, saying "my relationship with the media is not always easy but im trying. Im all about the music and the performance and I respect my fans."

This incident is capping off a pretty rough few days for the teen heartthrob, after having, what he dubbed, "the worst birthday ever," on Friday night when his buddy Jaden Smith was denied access to a London club.

Cheer up, Bieber! These are first world problems in the truest sense!

Watch the Justin Bieber 'Right Here' Lyric Video feat. Drake