In*criminal law,*kidnapping*is the unlawful*asportation*and confinement of a person against his or her will. Thus, it is a composite crime. It can also be defined as false imprisonment by means of abduction, both of which are separate crimes that when committed simultaneously upon the same person merge as the single crime of kidnapping. The asportation/abduction element is typically but not necessarily conducted by means of force or fear. That is, the perpetrator may use a weapon to force the victim into a vehicle, but it is still kidnapping if the victim is enticed to enter the vehicle willingly, e.g., in the belief it is a taxicab
https://en.m.wikipedia.org/wiki/Kidnapping
In the case of*S v Mellors*an adult woman was kidnapped at the library. The woman was not taken anywhere, but was forced to make certain telephone calls. This was still found to be kidnapping in that the woman was unable to leave the library (in other words, her right to freedom of movement was infringed).
http://legalhero.co.za/kidnapping_and_abduction_in_sa/
Please tell me what it is if it's not kidnapping..