MTN **** cake crush promotion

Good day in 4th of January I won the iPhone 8 256 GB on mtn cake crush promotion on my mtn number after they called me in mid Feb to confirm my address for the delivery and they told me it will take 2 weeks, after one week they called again to know if i received it or not but I have told them that I didn't reacive anything then they told me to wait 1 more week now it's been a more then 2 months but I am still waiting for the delivery of my phone which I won in cake crush can you now from 1 month I am sending massage on Facebook to MTN and also emailed MTN customer service but no one gives me reply.i think it's a **** Cake crush promotion that you guys are running to attract the customer.