Will plan change permanently change pricing?
I currently have a By the Gig mobile account. Due to the age of my account, I pay $12/gig instead of the $15/gig that is currently advertised. Most months I get by with 1 gig, occasionally 2, but I have a trip coming up that means I will most certainly use several gigs of data. For this one month, it will be cheaper to switch to unlimited or the 3 or 10GB options. However, I am concerned about my by the gig rate changing to $15 when I switch back. If it does, then the money saved this one month will be offset quickly by the additional $3-6 dollars I will pay in future months.
If I change my plan for this one month, can I return to my $12/GB rate?