Late delivery, charged for goods not delivered

I am extremely disappointed in the service that I have received from Pick and Pay Online! I ordered on Thursday 25/02/2016 for delivery on Friday 26/02/2016 at 17:00 - 18:00. On Friday, Pick and Pay called me and said that it will only be delivered from 18:00 - 19:00 due to technical difficulties. I stayed at the given address and after the time given, I received a call saying that it will be delivered the Saturday. I requested that it be before 11:00 as it was my birthday and I was having a party at another venue. NO delivery. I had to then go shopping for the party and was late for my own birthday party!!! I then only received a call on Monday from Mr. Delivery. The lady said that the delivery was taken to that address the Sunday but nobody was there to sign for it. Obviously nobody was there to sign for it as it was never arranged. The shopping was delivered on Monday at 12:30. I had to leave home on Monday at 13:00 to fetch my son but checked the inventory list until I was finished.