To appreciate this video (spoken in Flemish with excellent English subtitles), you'll need a few preliminary explanations. Four young fellows have decided to play an ingenious prank on a Belgian phone company named Mobistar, notorious for the poor quality of its call centers. The fellows rented an office container: that's to say, a fully-equipped mobile office that looks, from the outside, exactly like a shipping container. They painted their phone number on the outside of the container, and then got themselves delivered on the back of a truck to the suburban headquarters of Mobistar, where the container was placed in the middle of the road in such a way that it prevented Mobistar employees from getting into the parking lot. Then the four fellows waited. Meanwhile, friends in front of the Mobistar building filmed the huge traffic jam caused by the container.
Inside the office container, the phone soon started to ring. It was Mathieu, the Mobistar security officer, who imagined naively that he was in phone contact with the offices of a container company called Buro-Containers. Mathieu, of course, wanted the container company to come along immediately and remove their container from the Mobistar premises. But poor Mathieu receives robotic and moronic reactions of the same kind as those of the Mobistar call center.