How do I contact a buyer who is set as "unavailable"?

[atoztranslate]

Hi. I was recently contacted by a buyer via the chat system, but they've set themselves as "unavailable", so I can't write them back. Is there any other way of contacting them?

[donnovan86]

Well, you can wait for their reply. 

If you are not able to reply right away, there's nothing you can do. 

[atoztranslate]

Alright.