BAD SERVICE GIVEN

I am very furious with the service given by the agent at DSV "Pelonomi" i think shes based in Midrand,i told the agent that i need the device ASAP can they please arrage delivery on 2019/04/03 in my work place which is 10 Mins away from their warehouse to my work place ,since i wont be available from the 4th till next week and she promised to call me back at 10 am,which is she didn't bother calling me back ,then now i have to be the one calling in and asking..if thats how they treat other client then i wont tolerate such ,MTN might as well cancel the device i will personally go to the store and no follow up was done i had to personally called in and asked for the tracking number ( ********** 4* ********** )..