MTN with DSV is a disaster

After 3 weeks of waiting for my phone to arrive., the DSV driver tells me that the biometrics machine isn't picking up my fingerprint. They had to take the parcel back. I've been trying to send emails of my initial dissatisfaction in regards to the waiting time, but my emails were only responded to the day after. I am thinking of canceling the contract before it starts because I see that I might face even more problems than with this whole waiting. Also, I am uncertain whether MTN's service is completely inadequate or if it's DSV that make the experience with MTN difficult. Regardless, I think they need to sort this out.