Status says delivere...

I ordered stuff for my daughters baby shower all went well until I had to deal with GFS courier, on 22 Feb they state parcel out for delivery on 23rd phoned and lady refusing to give name telling me it’s not her problem she works from home,asked to put me through to manager you she puts the phone down on me,all of the sudden at 19:00 the parcel has been delivered which I did not receive nor did I get a phone call, then I phone and it’s stated it was delivered, the more I explain I did not receive the more I must wait till I receive or someone to phone me and when I raised the question who was it delivered to and how if I have a code that I need to give it was stated a lot of people don’t have WhatsApp so code not needed on delivery meaning anyone can receive a parcel from GFS why and how is this possible