Mtn Maverick complaint.

Renewed my MTN contract last year to a Huawei P smart 2019 told verbally by sales agent that it came with a free screen replacement with in the 1st year. Phone as slipped off lap, and cracked screen. Contacted MTN Maverick store. Only to be told the screen had to be registered when we got phone. NOBODY TOLD ME TO REGISTER IT. IF I WAS TOLD BY SALES PERSON I WOULD HAVE DONE SO. NO THE STORE AND HUAWEI WANT TO COME TO THE PARTY. I'M VERY UPSET ABOUT IT. WHAT CAN BE DONE ABOUT IT. NOT MY FAULT. I SHOULD NOT HAVE TO PAY FOR A NEW SCREEN.