Ordered something with next day delivery - needed for a wedding. The couriers messed up my order (I asked them to drop it with neighbours if it came while I was out, they confirmed, then didn't, and refused to redeliver that day or the next).
Called Lovelula to ask if there was anything they could do, and they sent me straight out a new package via Royal Mail. It arrived half an hour before I left, and everything was fine. Lovelula organised a return of the misdelivered parcel by themselves - they never charged me extra.
The kind of really excellent service that will make me a customer for life.