Undelivered parcel from DSV and MTN

1st, MTN sales agent never mentioned the Biometrics system to me so the courier driver went to my home on Thursday to deliver, I then sent emails to both DSV and MTN and received a call from DSV that delivery was set for yesterday to my work address, I never received the delivery instead received another call that deliver is set for today between 8 and 10 am, as I mentioned that I am only at work until 12 today, it is now 10.18, still not delivery and to my utmost disappointment, DSV courier driver calls me outside my work place at around 15.00 on a saturday although a note was made to deliver before 12 on a saturday. my anger, frustration and disappoint is that I made numerous calls to both MTN and DSV and sent numerous emails, to date, no has responded to my emails, I have tried calling MTN, no answers the calls, at tried DSV, I always have to wait for ever until i get to speak to an agent, who offers there apologies and promise that i will receive my package tomorrow, and that tomorrow has yet to come, I called DSV this morning to ask for a more Senior person, I was told to hold on until my airtime ran out, I haven't received a call back, considering the fact that I gave the agent my number in the event that I run out of airtime, which I did, and no one calls me, please help, if I cannot receive my parcel, then either MTN or DSV should refund me for purchase price of the delivery.