Poor delivery and customer service

I had ordered a few things during the National Lockdown to be delivered at my workplace after lockdown. After the change from Level 5 to Level 4, I was no longer able to receive the parcel at my work address, where I contacted the concierge to attempt to change the address, which was unsuccessful.

When the delivery was scheduled, on the website, it said the delivery would take place on 5 May. To my surprise when I went to trace the delivery, it had now changed to 4 May, then also had the description that delivery could not be made as I was unavailable. I then contacted conceirge again as delivery was rescheduled to 5 May before 3pm. I asked that they contact me when they come deliver so that I can have someone pick up the delivery on the 5 May.

On 5 May, when I traced the package, the description was now that the courier had a delay and that delivery was rescheduled to 6 May. When I contacted conceriege again, as it was past the expected delivery of 6 May, I am now being told that the delivery and package is being cancelled and I will receive a refund- when I gave them my contact details to be contacted prior to delivery- which was confirmed by the assistant that I will be contacted when the delivery is on its way.

Now my order is being cancelled, which is frustrating because one of the products is already out of stock.