Poor service

I ordered a Wi-Fi router from MTN and DSV was supposed to deliver the router on the 11th of October, this did not happen as the driver complained that my ID was not printed on the same side of the page. The delivery was returned and I contacted DSV the very same day, after calling for over 20 times on *** I was able to get through and explained what had happened. I was told delivery would take place today (12 October 2022) between 09:00 and 11:00, this did not happen. I have been calling on *** and at multiple times the phone was taken off the line so I could not get through. I have called over 30 times already and they are not responding.