I upgraded from the 100Gb to Unlimited a few days after it was announced.
My first bill arrived today and I have been charged for changing plans?
I wasn't told of any charge when switching and don't see why they would charge a fee to upgrade to a more expensive plan.

Emailed snap and questioned the charge and mentioned that I was not informed when I changed all they said was. "The adjustments change of plan charge is when you changed from the standard naked VDSL to the unlimited naked VDSL. "

Has anyone else been charged this and where you informed when you changed?

Adjustments     17 May 2014 Adjustments Change of plan 20.87     20.87