In my experience sometimes City Link say they've left a card but they don't
Am currently waiting on a delivery from City Link to deliver a Lap Top to my daughter at University. They supposedly called at 5.25pm yesterday and left a card and said nobody was there. But somebody was there up to 6pm and no card was left.
I've had problems with City Link deliveries to myself as well. I'm just about to phone them up and bend their earhole.
The most likely option is that the goods will be returned to the depot and stay there until you phone them up and either arrange to collect them from the depot or rearrange a delivery day.
If you have a delivery arriving on any day, always allow from 8am to 6pm, regardless of what time it 'normally' arrives.
Belloni, if you don't have the parts by this evening we'll have to re-schedule my visit. I'm working Thursday but free Friday.