The silence when you answer is due to a thing called a predictive dialer. it dials heaps of numbers at once and when one answers it doesn't always hang up on the others it has called as well.. Bloody annoying, I have been getting calls from this number also, i dont know why they dont have a switchboard for inbound and leave a message..
I keep getting fone calls from 31354949 a couple of times a day and a few times a week, I have no idea who it is. I wish they would stop calling.
Faith Moodie