Nightmare of a service

Made a delivery appointment for 14/12/2022 for MTN sim contract, waited the whole day with no communication from their side, called them and was put on hold for more than 30 minutes, and the call was cut off, they never return the call, call them again and it was the same experience. On 15/12/2022 called again, the first call I experienced a similar situation as the previous day's calls. On the second attempt was told that my parcel was picked up incorrectly by a driver from a different route. I advised the agent to cancel my parcel as they are playing silly games in their contact centre, and she advised that I call my service provider which I did I was transferred from one department to another until I was told that it was already 5 minutes to cancellation department closing time and I have to cancel it on the 19/12/2022. Think the initial call from DSV I arranged for the 14/12/2022 delivery because I was supposed to be out of the province by 15/12/2022 and now was inconvenienced by the lack of professionalism from their side costing me dearly.