I have topped my daughters phone up of £20 and she has used it before I done the £20 all in one can I top up £1 to make it to £20 again to do the all in one
@elliegm04 She must have switched on mobile data and used up £1, you would have to top up another £10 minimum to be able to get the goodybag you want or maybe just go for the £18 one for this month, if you are new an agent may at their discretion help you out with £1, but you will need to ask and explain what has happened and it is not guaranteed, try not to use up any more credit if you do decide to ask.
Direct link to ask an agent:https://support2.giffgaff.com/app/ask/Top-up-balances-and-goodybags/goodybag-allowances-or-credit-balance-incorrect/form/
Please note: Our agents aim to answer all enquiries within 24 hours. Replies from our agents can be read and responded to from https://giffgaff.com/support/questions