Google Apps Harassment / Spam

My mailbox receives e-mails from Google on a daily basis. All these e-mails are regarding the 'upgrade' of MY Google Apps account. The problem is, I don't have a Google Apps account. I have a Google Analytics account for some of my websites (this being one of them).

At first they say you have an account.

Google Apps Spam

And when you try to login to that account, they say that I don't have an account.

So explain this; why do I get upgrade e-mails for something I don't have?

A typical example of using existing database information for luring people into getting other services.