Called & went to voicemail, but left no message.
Upon checking online, it seems more than likely this is a scam; people posing as SES Volunteers selling raffle tickets.
SES do not sell raffle tickets, & rarely do fundraising in this manner.
See link below for info on this scam.

http://www.news.com.au/technology/environment/ses-warns-of-donation-scam-as-fraudsters-take-advantage-of-disaster/news-story/52efc72f31abac5183a7288a2eb9463c

Ringing four times a day when are work. Very annoying flooding my call register.

The NSW SES Volunteers Association is a registered charity that does conduct fundraising to support SES Volunteers. Those wishing to support our members can contact our call centre that is operated by Contact Centres Australia on 1300 707 344. This is a legitimate fundraising initiative that supports volunteers through scholarships, grants, training and welfare programs.

Scam, claiming to be from SES.

State Emergency Service. Seeking donation. I asked to be removed from database. Not pushy - and obliged nil fuss. I have also blocked the number on my phone.

Person rang up stating that they were selling raffle tickets on behalf of SES. Stated to sales person that I had told you guys that i am not interested on several occasions. Sales person stated that he would add me to their Do Not Call List.

Same as others have reported, they hang up when you answer phone

I just spoke with Contact Centers Australia regarding a call received from this number. It is legitimate. There are no obligations to provide financial details over the phone as agreement for the purchase of raffle tickets to support the State Emergency Services can be made once the tickets are received in the mail. Please continue to support the SES. Their services are invaluable when the need arises for you or one of your loved ones.

Telemarketers do not raise money for SES, it is a scam raising money for themselves.

This number rang today said they have access to silent numbers! Am reporting them now! Talking about natural disasters sounded very dithery and unsure

I am receiving calls on a daily basis from this number. 3 calls this afternoon but I do not answer. I also have a silent number and are on the do not call register. Very annoying!

I'm a shift worker on do not call list. Rang at 1.30pm this afternoon about half an hour after I'd fallen asleep. Very annoying.