Vodafone 50GB/$40

9-12-2018 ended up phoning vodafone and organising the upgrade over the phone.  There was a little hiccup when they said I had already upgraded (to 40GB) and was effectively locked in for 12 mo.  What and have an unhappy customer outcome.  Bizarre but then they managed the upgrade.  Why they don't just do it automatically?  Who knows.