Very poor service from MTN and DSV

I ordered a new cellphone contract with MTN on 23/07/2020 which was approved and my account was debited. The delivery of the phone was handed over to DSV distribution. I phoned DSV distribution on a weekly basis in order to follow up with the delivery. First issue - they had the incorrect nr on their system, I gave them my correct nr which they first had to confirm with MTN. 2 weeks later MTN confirmed the number and delivery was scheduled for 21/08/2020 between 11;00 and 13:00. DSV phones me the day of delivery before 9 o'clock to deliver, I was not in the office as delivery was NOT arranged for 9:00, and they said that they will come back at 13:00. Never came back! After another few frustrating phone calls they arranged another delivery for today 31/08/2020 between 11:00 and 13:00. Again they arrived before arranged delivery time, but I was in the office and could collect the package. However when they wanted to send the OTP nr in order to confirm delivery, they had the wrong cellphone nr again. They refused to leave my phone, which I have been paying for because they had the wrong nr on their system. Which is strange because they have been phoning me on my correct nr. They instructed me to phone MTN in order to confirm the number, which will probably again take another 2 weeks. I am so disgusted in the service received from both DSV and MTN - more than a month later and I still don't have my cellphone that I have been paying for. I asked the gentleman from DSV to cancel everything as I am not willing to wait any longer. He cancelled it, but couldn't give me any proof of cancellation as requested.