Bad service

They been waiting for my parcel from Monday it has been showing out for delivery but they not delivering, Friday morning I woke up with an email saying package delivered I went crazy I called them they confirmed delivery and the receiver even wrote my name wrong. I said ok if you have delivered give me the car registration number I stay in a estate we have cameras in all our streets, then boom they told me it was a mistake the parcel is there there it was a mistake so if i ddnt mention the cameras which we do have I would have lost my parcel because they told me they delivered.