The least professional place that has ever tried to hire me.
I got called literally the next day after my application. After a quick interview over the phone, I was told a day for orientation, and was never contacted after this point, in spite of promises otherwise, and attempts to contact them were hit and miss.
Upon the day of my orientation, I arrived to discover that not only was I not on the list, but that they would not be able to hire me for at least one month.
They then insisted, that in spite of all evidence to the contrary, that the day was never finalized. They repeated this lie as if it would somehow make what they did less incorrect. Then after effectively calling me a liar and testing me poorly, they told me that they would be willing to hire me in one month and "looked forward to seeing me.'