Usually good, this time has been a blunder!

REF: Order no: ***

When I order my item on 25th February 2021, it was confirmed that my items would be delivered on 1 March 2021, which I was quite happy with, being a weekday. On Saturday 27th February, I get a call from a driver stating that he is at the door of the company I work for - I explain that it is Saturday and that I was expecting delivery on a Monday and to please arrange delivery on Monday. On Sunday 28th February, I get a call from what seems like a different delivery person, I explain once again, that it is the weekend and I do not work on weekends - to please deliver on Monday as originally scheduled. I waited for delivery on Monday 1 March, only to find out much later that my order had been cancelled.

How can you cancel my order on the day it was originally scheduled for delivery?