Dawn Wing has to be the worst service

The worst experience. I was advised on the 09 June at 09:30 that my parcel would be delivered on the 09 June. a second call was received on the 09 June just after 10:00 confirming my address and was promised delivery at before 12:00 on the June. it is 16:00 now with me on the call for over an hour asking about my parcel and I am being sent from pillar to post. I just want my parcel