The Double-Checkmark of Doom
There’s a ton of context to this story that you should know about. Firstly, the OP had never taken a day off in the several years they worked for their company. One day, they decided to take two weeks off to go on vacation, which was approved by their boss.
After their two-week vacation, they immediately informed their manager that they were back and ready to rock. Unfortunately, the manager thought that an approved two-week vacation meant the OP was never going to return ever again. They weren’t officially fired from the job, but they didn’t receive any more shifts.