Quite. I am one of those. I had one food parcel before Tesco brought in their priority deliveries for the likes of me (I'd never had groceries delivered before) I tried to stop the second week of the food parcel - but was too late. Nor would they take it back. Left a note out saying not required afterwards, as the system didn't seem able to cope with being cancelled.
I was very grateful for that first parcel, as previously I tended to shop most days, so didn't have a stock of food. But plenty toilet rolls. ;-)