Answered a call from this number & no one answered could hear background noise, very next night received another call around same time only rang once & was missed call that said from number that come up as Papua New Guinea
+675 70896191.
Found this scam that could be related
http://www.dailymail.co.uk/news/article-2550952/Missed-call-unknown-number-Phishing-scam-sees-cell-phone-users-charged-call-numbers-dont-recognise.html