Cannot unsubscribe from Woolworths newsletters

I have unsubscribed from the Woolworths newsletters I keep receiving in my email inbox four times now, and still they keep coming. Please, please stop sending me your marketing communications. They are never relevant to me. In fact, sometimes they couldn't be less relevant to my needs. I am not a twenty-something female looking for shoes. I am 45, male, and I am not inclined to be moved via email by any retailer to commit any type of purchase, ever.