Caller: Said her name was "Shirley"

*TO CLARIFY I AM IN NEW ZEALAND THIS CALL WAS FROM AUSTRALIA* 3 Days ago i was visiting a friend around mid day. During a conversation with the friend I received a call on my cellphone so I prepared to answer the call without really taking note of the phone number that was on screen, I answer the phone with a curious toned "hello" and an old lady with an Australian accent starts saying she is just returning a call that she had just received and.missed from what was my number, after me asking her questions to clear up my doubts i was having about it even being a possibility, this old lady asks me if im in new zealand i say yes i am and she says "thats abit odd then isnt it" then we both start to say our goodbyes, after I said goodbye and she said the same i heard what sounded like a males voice also saying bye but almost at a faster pace vocally then what most people would consider normal. Call logs soon prooved i never called that lady as my freind and i were catching up at the time so i wasnt actually using my phone. Nothing can justify this and it has put the sh*ts up me a little bit if im being real honest. CALLERS NUMBER WAS 0478 810 011 (TRIED TO CALL THAT NUMBER MINUTES BEFORE MAKING THIS ARTICLE, NO ANSWER JUST FOWARDED TO AN EXTREMELY ODD SOUNDING AI VOICEMAIL SERVICE) sorry for the novel but i need people to understand the weirdness of this as much as myself and my friend did