Can't assist with Radio reset

Yesterday out of the blue my Nissan Juke did not want to start, it sounded like the battery was flat.<br> On a second attempt my vehicle did start, but the radios asked for a pin code.<br> I bought the vehicle second hand and was not aware of the card you receive with the radio pin.<br> I called Nissan Centurion and was advised that in order to reset my radio they will need to remove the radio to get the serial number and this will cost R750.<br> Now I have to book the vehicle in and pay R750 just to retrieve a radio pin?<br> <br> How is it possible that the number can't be retrieved by using the VIN or engine number?<br> Surely the radio serial number should be linked to my vehicle's details or be on file or Nissan should be able to reset it without removing the radio?