Made an account just to post this hahaha

In Australia we say cheers as thanks and would only ever use it as a goodbye in the context of an email, even then it is more of a thank you

Dear Tom,

Could you please do that thing for me?

Cheers,
James.


On the phone it may be used as part of a farewell such as 'Cheers mate, bye' which means 'Thank you friend, goodbye.'

Thats all I have to say on that