Does it make a difference where the post is delivered too?
I don't see how someone could complain that the address to their front door is up three flights of stairs but happily accept the postman delivering their letters through the communal letterbox on the ground floor.
I don't think Tesco deserve the criticism they are getting for this. The customer in question agree to the terms that stated her delivery might not be brought up to her personal front door, and again, there may have been very good reasons why on that particular day, that particular driver would have found it very difficult to carry all her shopping upstairs for her.
She coud have chosen a delivery time when her partner would be home.