Or not.
Trust me they are shite, in particular the Parcelforce branch of the Post Office. This week i missed a delivery on Wednesday so rebooked for Friday, took the day off work and surprise, surprise it didn't even get loaded on the vehicle!! Promised delivery Saturday morning by the branch manager and again it didn't leave the depot, spoke to the bloke there this morning and apparently "it's not my problem, i only answer the phones". Reported the depot and manager to head office this morning, a complete waste of time. Last time i had a problem with them i received 2 attempted delivery cards, arranged a delivery date, waited in and amazingly the track & trace said "unable to find address" at the end of the day, seemed to find it alright when there was nobody in. Have a look here for other horror stories, i'm amazed these companies are allowed to operate like this. What's it like in the US?
Again, always send recorded.