823677 giffgaff could put a warning on your credit balance info dashboard?
giffgaff should do the job properly and implement a switch in call services that can turn off using data from credit.
Until that happens, the safest way is to ensure that payback of more than £10 is always paid into paypal, not into credit. But that’s not possible for those under 18, so implementing the “data off” switch would be by far the best solution.
