STOP SELLING MEMBERS EMAIL ADDRESSES

I created a gmail account specifically for Zando. It wasn't used for any other purpose and nobody has it. Yet...the gmail account is full of spam email offers from various companies offering insurance, cars, cash etc...<br> <br> Please provide me with copy of my permission that allowed my email address to be distributed to these companies - as only Zando have it?<br> <br> Thanks<br>