O2 failed to flag a five-hour scam phone call that cost me £914

‘Wangiri’ scams, or ‘one ring and drop’ frauds, lure victims into calling an expensive number back after a missed call. Photograph: Luc Novovitch/Alamy

When I received my monthly bill from O2, I was shocked to see a payment of £914 had been taken. I phoned customer service and was told this was because of an international phone call I had made to Tunisia.

I don’t know anyone in Tunisia. I then logged into My O2 and discovered a fraudulent call lasting almost five hours.