International roaming is active on all Boost accounts (unless you have previously turned it off by contacting customer support). This means you can receive SMS while overseas.
To make or receive calls or send SMS while overseas, you’ll need to:
Roaming is available in most countries commonly visited from Australia. International roaming rates are higher than rates within Australia. Check call rates for the country you’re visiting here.
if you are having difficulties please contact Boost via live chat (24hrs, 7 days)
I'm sorry to hear that Julesem
Have you been able to get your phone up and running since then?
If you have purchased the Bolt on and have international roaming activated you should be able to make and receive calls.
Otherwise all I can recommend is to get in contact with support on 125 8881 (8am-9pm, 7 days) or on live chat (24hrs, 7 days)