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[Paul13]

iPhone 6

[MI5]

Just ignore and block them. It's a scam and if you call back you will get a very big phone bill.

[Paul13]

Hello my name is paul I have been an o2 user for many years. During the last 6 months or so I have been getting unknown numbers from all over the world such as Russia Cuba Europe Africa etc etc the phone rings once only I delete and block these numbers but on my blocked list I have well over fifty numbers. I can’t see the point in this but how do I deal all the blocked numbers enblock. Are they a scam do they have a way of accessing passwords etc The furthest I have ever travelled is Spain so I have no overseas contacts Wjyy waste their money Any ideas paul

[MI5]

You can only block them individually as they call.
Do not call them back.