Spam emails - unable to unsubscribe

<p>I have unsubscribed from Woolies Food and general Woolies emails about 20 times.</p> <p>I have phoned the head office. I am 'inundated with a constant, unstoppable barrage of Wollies emails.</p> <p>It is impossible to stop them coming. </p> <p>I just want them to stop sending me all these emails. </p>