Somebody ordered instead of me via Shopify from this site -

I suppose this is a fake shop, because somebody else ordered using my e-mail.

Yesterday evening suddenly received a code as an SMS on my phone and then e-mails that I have a new order.
I suppose my Shopify account is not hacked because the order was for free - 0 JPY, and the “hacker” had to use some dummy billing address.

Does anybody else have an experience with fake Shopify orders?