****med by Woolworths

I bought 3 pairs of socks online because the third pair was free. Now one pair is out of stock. So instead of contacting me regarding my order I was informed via email that the free pair is out of stock but not to worry as I would not be billed for it. I feel ****med by Woolworths. They think that I must be grateful that they wont bill me for a pair of socks that I am not getting anymore which should have been for free in the first place.