Absolutely disappointing

Absolutely pathetic service. My parcel was supposed to be delivered before 5pm on Thursday 28/11 and it was not, it was then scheduled for delivery on Friday 29/11 before 5pm and once again it was not delivered. I have now called them on Monday 2/12 and no one can offer me any assitance as to when my parcel will be delivered nor put me in contact with the delivery person. I was told they would contact me but no one has contacted me for the past 6 hours. This is terrible customer service.