Anyone actually at the call centres?

I tried P n P online shopping for the first time & its been an absolute nightmare. I have been trying to reach the online shopping call centre and customer service call centre since yesterday. Over the course of 7 phone calls I have been on hold for a minimum of 15 minutes, and the longest was 35 frikkin minutes!!!! I thought online was supposed to save time? Not so apparently. There's been endless issues with the order, from the delivery day being changed an hour before the set time to then redcheduling and coming home from work for the allocated hour & no one pitching up (That was fun) To then have to come back an hour and a half later when I was back at work & crazy busy to then having missing items that need to be reported to the call centre, where apparently no one actually actually answers phones so I'm not sure how I actually get the missing items now? I also got long life milk that will expire before I could possibly consume it! I actually can't believe the shocking service ... disgusted.