MTN Account

How MTN is ruining my life, i have been black listed due to the phone contract that i never received, the phone shows that it never left the storage n now its affecting my credit record i can't do anything like applying for a credit anywhere because of this, and everytime I go there they are willing to help me but as soon as I leave the shop they don't follow up now i receive calls regarding the unpaid bill left right center, its disturbing my life i can even apply for a bond, or buy a car due to non existing MTN account, am pleading with anyone who is willing to help me with this mess. TIA