Cant' Download Overwatch!

Recently bought Overwatch, but it won’t download on Battle. net in Australia. It has downloaded 7.6 gb, but always either sits on 0 kb/s or “waiting on another installation or update”; although I can browse youtube & facebook simultaneously. I ran Battle. net Looking-Glass and the ping states:
PING:
PING 101.165.140.97 (101.165.140.97) 56(84) bytes of data.

— 101.165.140.97 ping statistics —
4 packets transmitted, 0 received, 100% packet loss, time 3000ms

any ideas appreciated.

Note
no issues with proxy, firewall, flushed DNS and reconfigured IP.

These steps might help: Patching and Installation Troubleshooting - #2 by Glaxigrav