Here's their published methods for topping up
www.giffgaff.com/help/articles/add-credit-to-my-account
So you can either buy a card from a store and send the code from the phone to the text number or do it using your online account. I imagine that would just go straight onto your account, no code to enter.
It sounds to me like you may have inadvertently ordered a new card, or they processed your request wrongly. If you did it online just run through the steps again and confirm to yourself how you did it.
EDIT: Oh, and no, you wouldn't get a new SIM for each top up!!
Last edited by: smokie on Wed 15 Jul 20 at 10:35
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