Hi have topped your account and see n the last 3 months call are only free if you did that check your account history
Hi best option check your account history using link
click this link to see your payment historyhttps://giffgaff.com/account
Dial *100# for your airtime credit (PAYG) balance.
Dial *100*7# for details of your current goodybag
If still not clear what went wrong contact an agenthttps://giffgaff.com/support/ask/