Thank you for your Help.. Sorry for the late reply when I got back on the next morning I could not see my question anywhere and have just worked out to find it.
I did not receive a email like that, I got two emails #1 your apple ID was used to purchase from iTunes if you made this purchase disregard this email and #2 someone used your password and change if it was not me..
I looked in my Account purchases and found the one for that song for $2.19
Yet it will not let me put that song on my iPod Nano 2nd Generation, and 10 days have passed and my Visa statement on line still has $1 stuck in it and still pending is that the reason I cannot put that song on my iPod.
I also bought my Husband who has a iPod touch 6th generation a song on his account with his Visa card and it refused that, I cannot remember the exact wording now, wondering why this has happened as its a joint account, only different card numbers. Once again Thank You for you time and Help.