I'm trying to reduce any dependence on Google. Nevertheless I just tried it out and it says it's not available in my country.
It's bad enough having banks rely on a phone system where most carriers are perfectly happy to let anyone who knows your Address, DOB and Mother's Maiden name to port your phone number to a new SIM.
It probably requires less effort (and certainly less risk of discovery) to take over a Skype, Google Voice or other VOIP/SMS service.