Terrible Service

I was refused delivery of my phone from MTN today because DSv’s biometric service failed to work as all the other reviewers I am having the same issue I could not receive my phone and was told Dsv will contact me I have not been contacted I had to contact both MTN as well as Dsv myself and still never got any feedback I would like to have my phone and will not be sent from pillar to post! If Dsv knows about the equipment which fails to work everytime why not take action instead customers are left to do a run around and unsatisfied with bad service. I would like an immediate solution as well as my phone it says on your text message fingerprint or otp why was I then not given this option??? Why do so many customers have to leave bad reviews to get any sort of outcome.