In my near (+200 years) future world teleportation has been invented and is now in common use especially for off-world travelling, but it works by creating a perfect copy of the travelling human nearly instantaneously at the destination not by moving the traveller in space. The evil corporation that invented the technology have hidden this from the populace because of the commercial opportunity- so once the destination copy is created the original person is automatically killed within the teleportation device and that has worked perfectly for many years... Until today.
So future plot notwithstanding, how could the evil corporation effectively dispose of so many bodies so easily and invisibly to the population? Also, aside from the conservation of matter/energy laws, which I will hand-wave away, are there any other negative consequences of creating copies from a physics point of view?
Edit: For clarity the premise of this story is not the technology behind teleportation or how to dispose of bodies or even whether to kill them or not, that's a given, it's about what happens when this goes wrong and you end up with duplicates