Had probs all day .. i am trying to make international call but keep getting message that starts with a brief beep and then says' please check the number you have dialled ' i know the numbers is correct and all dialling codes. my friend can ring me but when i try to call them back immediatley(cheaper for me to call) i get this message.. its driving me mad !! its not my phone cos i get same message when i call from different number. anyone know about this ??

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