Delivered Damaged goods.

I did an upgrade on my contract on 27/03/2018 and my handsets were delivered yesterday 10/04/02018 , only to receive Huawei P Smart Gold that is not working. when i tried to switch on the phone the screen is white blinking black and green colours. I called the customer call center and was told to go to any MTN shop to explain my problem. I went to the one close to me PTA central and they refused to assist me saying that since i did the upgrade on through call center i should visit MTN direct shop at Brooklyn.

I called MTN Brooklyn which is too far from where i work, and they responded that its not them that should assist me. now i am having a handset that is not working, what should i do with it??? and month end they expect to debit my bank account ???

if i do not get my problem fixed, i will reverse all the debits on my account. I do not want this phone fixed but i want a new one, it might give me problem in the future.