My mum has medical issues which mean that she has a significantly impaired short term memory. To avoid recurrences of issues where she forgot to top up her phone and had no way of contacting anyone, I got her a contract phone about 2 years ago which I pay the monthly bill for.
She has now told me that "when she gets a text saying her balance is £0, she goes and buys a top up and puts it on her phone". She hasn't kept any of these texts, but I can only assume that they are actually saying that the balance owed is £0. But if that is the case, she has probably been receiving that message once a month for 2 years, and going and buying a top up.
Does anyone have any idea how she has actually been managing to activate the top ups? (Where you call the number on the card and it gets added to your phone). I'm just at a loss as to how the top ups have gone through and where that money has actually gone!