They got you PF, same thing happened to me with the Great Dominoes Data Leak.
Proven by a unique username and my usual email address not as in your case of a unique email address. (Dominoes blamed a supplier LOL)
https://www.google.com.au/search?q=d...hrome&ie=UTF-8
Make a message rule to bin anything with Bargains AU in the header.
Oh, I should add that I'm also now getting emails from Bargains AU, if they don't stop soon I'll set up a rule to dispatch them into the bin.