Unacceptable service shopping online

Shocking. No response from the call centre. I am missing half of my online order and I cannot get any response out of Woolworths. I spoke to a call centre agent yesterday who said the store would deliver the remaining items this morning. I have still not heard anything. I just waited 20 minutes on the call centre line to have the agent put the phone down on me... I have now been holding on again for over 20 minutes...