On your phone dial *100# for your airtime credit balance dial *100*7# for your goodybag minutes balance dial *100*1# for your free calls expiry date dial *100*5# to see your remaining text balance (Applies only to Hokey Cokey goodybag which has 300 inclusive texts )
There are a couple of apps you can download. Giffgaff minuits and giffgaff balance. There both great apps and saves you dialing those long numbers. Take a look mate as i think you will like them. All the best..