Extremely bad service

I had a very bad experience through DHL Express. I have book my parcel 8 October 2021 so it can arrive on 18 october 2021 as promised by Nompumelelo Mlaba only to find out my parcel wasn't book at that specific date only to be book the following week 13 October 2021. As I was the one doing the follow up calls which cost more the then the parcel itself and she was just very quiet about my experience. I remember calling on 13 October 2021 around 16h30 requesting to speak to superior. He ( John) had nerve to tell me wait until he finished his lunch and he will contact me which he never did until today. Afterwards I dealt with Sade Eiman who promised to call me and send me emails to keep me up to date with the movement of the parcel, which only did it via email when she heard I called her office before she never pick up her when I call her. I'm still waiting for a call from complaints team which I guess I'll very receive too.Im very disappointed in DHL service.