Picturesque Protea!

When I arrived back home after walking Hollie round the block I found a large cardboard carton sitting in my porch. Not expecting any delivery I checked the label on the box - my address and postcode but NOT my name. The carrier had left a delivery card so I tried phoning them. When asked for the 8 digit ref number I was told there was no record of the number I keyed in. Tried a different approach. The gift card inside the plastic sleeve was from M&S ...... phoned them and they were as helpful as they could be but could give me no info as to sender or recipient. As I had done all I could the girl told me to keep the bouquet!