Poor customer service

This courier company is about to change it's name to DPD Laser. I hope that their efficiency improves with the new name. I am tracking a parcel sent to me from Cape Town; due for delivery on Friday 4 June 2021. (Tracking number: RMS***) I see that their status says "Address Incomplete." On trying to follow up...I was told the problem was in Pretoria. I chose to follow up in Pretoria only to be told - 'there is nothing wrong with this address. I will reschedule for Monday. When I protested, they agreed to try for Saturday. Very poor reflection on how to provide courier services. This should be seamless and I should not have to follow up all the time...especially having to go from their "help desk" to the branch involved. Bad customer service.