Two years ago I bought from Maplin a white T-Mobile PAYG internet dongle for £30. It included about £20's worth of access in the deal. It is used only rarely, perhaps nine months go by without any use. It has never been topped up, there is still £9 left on it and it was used in early June. I thought the deal was the credit expired after 6 months? Have I just been lucky, or did the deal change? I tried asking T-Mobile but they don't seem to know.