A Microsoft file hosting and synchronization service.
I live in Australia. I found the information in the following link:
http://www.microsoft.com/en-au/contact.aspx
This provides the telephone numbers for callers in Australia, New Zealand and various Melanesian nations:
Australian callers: 13 20 58
International callers: 612 9870 2200
This help desk is in the Phillipines, but because it's a 1300 number, I assume the cost is similar to the local call rate. They operate 8 am to 8 pm, 7 days a week.
The above link also includes the option for you to click on 'This site in other countries/regions'.
Before I rang the above number that number I used the following link:
https://partner.support.services.microsoft.com/en-us/contact/menu/software/windows/ts/
Click on 'Schedule a call', where you can provide your phone number and the best time to be called. This help desk which is in the USA, provides help to callers from the USA and internationally. Nevertheless, when I told them I was ringing from Australia, they connected me to the Australian help desk which was closed. So I tracked down that telephone number (the first link I provided above) by searching on the internet.
I hope you are able to get your problem solved.