Had a job as an assistant manager in a servo, was asked in to fill in as manager in a location on the location 2hrs away for 3 weeks. I ran that store on my own (usually a manager and two assistants) for 3 months, before going back to my original workplace.

Later I was told they were transferring me back there and I said "as manager?", no assistant manager. Told them on the spot that is was effectively a pay cut, and slap in the face, and quit immediately, went travelling overseas.

My direct manager hated me and it was a deliberate act to screw me over, but head office was pissed as I was good at what I did, they attempted to lure me back without success. It was a pivotal moment as my life changed drastically for the better after that.