Serenata Flowers review: Serenata flowers

Ordered flowers for the wife of a great friend who had died and we were unable to attend the funeral so asked for flowers to be delivered to her on the day of the funeral. Specified leave at front or back door if no one at home. We were abroad during this time but I kept getting messages from DPD who seemed not to have taken any notice of my instructions - messages up until yesterday a week after the date flowers were due to be delivered saying that they would be delivered "today" four messages over the period of nearly a week saying the same thing. Have tried to contact Serenata but eventually get passed to a company who want to charge £1 to deal with the issue! Flowers value £39.99 - can you help please?