Can anyone explain this giffgaff data thing?
"Mobile Internet is charged at 20p a day (up to 20MB). ***You will be charged at 20p/MB until you use 1MB/day.*** If you use between 1MB and 20MB you will only be charged 20p/day. If you go over 20MB you'll be charged extra at 20p/MB."
I don't understand that bit in the middle!