Normal data usage depletes Entertainment Bolt-on package

I have a Entertainment Bolt-on package which is supposed to be for only video/streaming. However, I've noticed this week that while updating my phone's software (iOS) during Nightsurfer time, the data (+/- 1.5GB) was deducted from my Entertainment package balance and NOT from my Nightsurfer data. Phone/software updates are normal data usage and not video/streaming/entertainment.

Please can you correct this and credit my Entertainment package accordingly.