I don't know why companies continue to use Royal mail to send out parcels to customers. Whenever I get an email that says "your goods will be delivered by Royal Mail" I immediately cringe and think "wonder when I will see that".
My latest escapade is with a delivery from Marks and Spencer. We need the items by the weekend, we have hospital appointments Tuesday through Friday, so I paid extra to have it delivered today (Monday). As soon as I received the email saying "Nominated Day Delivery on Mon 24 February 2020 by Royal Mail" I thought "Sh*t". Then today I get a tracking email from Royal mail saying"Delivery is due: Tuesday, 25 February 2020".
Even when they do deliver they won't leave the parcel in a safe place as couriers do. They won't try to deliver the next day as couriers do. No, you have to go out of your way to collect it.
When you are in they ring the bell and by the time you get the 20 feet to the door there is a card through the letterbox and the postie is halfway down the stair. One time I was at the back of the door putting my jacket on when the card came through the letterbox, then the bell rang. I instantly opened the door catching the postie on the hop. He didn't even have the parcel with him. It was a heavy box and he had left it in the van. I stood at the door while he went down to the van and came back with it!
And don't bother to lodge a complaint. Nothing gets done.