I have the very same problem. I have no subscriptions whatsoever, and I am receiving an increasing amount of emails from www.ads-software.com about topics I’m supposed to have subscribed to. It is getting pretty annoying, especially considering the fact that I am not able to discontinue my Worpress account myself – something I intend to have done by WordPress Support (which is also pretty difficult to get in touch with!) if this spamming is to be continued!
First four letters of my email are DUNC