I ordered a picnic lunch for my 90 year old mum. I was taking her on a boat along the Thames. I arrived at Chesham Sainsburys at 10.00am, (the time requested) to pick up the order and of the 3 items, 2 were not available. This meant that I had to chase around the store, find something else and get back in time to pick my mum up and get to the boat. What would have been a great memory and day out was suddenly made stressful. I telephoned to complain, got a refund on the items not available. but was told that I should have been informed in advance as to what was not available. I was told that this complaint would be "escalated". I have heard nothing more from Sainsburys. I guess they thought I would just go away.