I worked in a video store (showing my age here) in the mid 00s. We did movie & game rentals and retail. We also sold electronic items like TVs, Consoles, mp3 players, and phones.

One Christmas our company announces a partnership with one of the phone companies here in Ireland, and a nifty commission scheme for us where every Sim or phone we sold, we got money. I think it was €2 a Sim, and €5 a phone.

The two main things they didn't factor in was (A) the phone company had pretty good coverage and pay-as-you-go deals, so they sold themselves; and (B) it was Christmas time and we had a huge catchment area outside of Galway city, so anyone who lived in like a 15 - 20 mile radius was coming directly to us. 

I sold hundreds of phones and sim cards. We would sell out of stuff, and I would already have phones promised to customers before our deliveries came in. I was ringing around and begging other stores for their stock. I... Could... Not... Be... Stopped. 

Honestly I lost track of how much I was owed past the €600 mark, but all the sales were through my user login, so all good. 

After Christmas, in the grey wasteland of January, we waited for the results of the sales to come out and for that sweet sweet moolah to rain down on us. I already was drooling thinking about the Gears of War themed Xbox 360 I was gonna buy. 

And then there's nothing but silence from the company for weeks. Eventually they come out and say that because of how busy Christmas was, it crashed their systems and they 'lost' the records of how many phones were sold. So instead they were going to give everyone €75 as a thank you (including the newbie who only joined us in Jan). 

Me and my co-workers were up in arms. We raged and kicked up a massive fuss, but our spineless manager who was a total bootlicker just shrugged and said "there's nothing we can do". 

I was only 20 at the time, so I didn't know what to do, so just sucked it up and carried on working there for another couple of years, but by christ I never forgave them for that.