MTN and DSV couriers

I have been a long standing customer of MTN for about 15 years. I recently upgraded my handset, that was no problem. However, MTN desperately need to rethink their courier service. On Wednesday the 10th of August I was promised delivery of my new device, I work from home, I was told they would deliver between 2 and 4pm which is when I am busiest. I requested a different time only to be told that I could not have said device delivered at that time. I then contacted the company I worked for and told them I may need to take a delivery. I waited the entire day, no delivery. At that point I contacted DSV only to be told that they had delivered and that the biometrics failed (fingerprint). This is impossible as I didn't even see a courier. I then contacted their offices and was promised delivery yesterday, they did arrive and in an ironic twist, the biometrics failed. I am standing in front of my own home with ID, proof of address and once again STANDING in front of the domicile to which my ID and proof of address proves it's me. The biometrics failed 8 times and I was not given my 20K device. This service is shocking and needs to be addressed immediately. I am 100% dissatisfied with this service and I wish to be compensated for my time wasted. MTN, you are a great company but you need to rethink your delivery service.