Spam lands into inbox..... AGAIN!

My e-mail account wants to be shut down perminantely now and another one created from thousands of other mail sites elsewhere on the internet because everyday (and every hour) I'm getting spam in my e-mails. Talk about weird e-mails. I'm getting mystery money, business proposals, viagra offers, business transactions and more mystery money! And if contacting Yahoo but no help was anything to go by, I'll definitely have a different e-mail address sometime next year (like somethingsomething@google.com) because I'm getting physically sick by the amount of spam I'm appearing to be receiving everyday! And who would of guessed a spam message of mystery money from something @Webunit arrives into my inbox again! It's getting worse, and something tells me something's seriously up, because I've contacted Yahoo twice, first on christmas eve, second last month. But my issue hasn't been resolved!