Infacare less in box

I tried calling the number on the box was put on hold for 10 mins and transferred from pillar to post...... I am soooooo upset i bought the big box of infacare 2 for my baby only to find three packets in the box... I feel ****** and im so ****ed off i work hard to buy babies things and i budget well now i have to give out more money to get another box for extra milk .Totally disgusted and disappointed as i paid for a full box of 4 packets only to get three