The song was originally sung by Dave Edmunds in 1970, and here are the lyrics:
And now you’re knocking on my door.
I hear you knocking,
But you can’t come in.
I hear you knocking.
Go back where you’ve been.
I begged you not to go but you said goodbye,
And now you’re telling me all your lies.
You’d better get back to where you used to be,
‘Cos your kind of love ain’t good for me.
I told you way back in fifty-two
That I would never go with you.