dissatisfaction with handset

I took out a contract a month and a half ago at Zewenwacht MTN and told the salesman I wanted the IPhone 6S because I could sync it with my iPad and enjoy the ITunes which was already loaded onto my iPad and share other apps. The salesman told me that I should not go for the iPhone, because it only had a 1 year guarantee and it was no longer for sale x 36 months, even though the catalogue still had it advertised over 36 months. It is still advertised x 36 months in the newest catalogue. How odd is that? A few days after applying for the phone I went back to Zewenwacht MTN to find out if my application had been approved, after receiving no call from MTN. I was told that it had been approved. Upon the recommendation of the first saleman and the new lady who helped me, I took the Samsung Galaxy Edge x 36 months even though my heart was set on the iPhone 6S. I was led to believe that the Edge's memory could be upgraded via a mini SD card, that it had a radio and that the battery could in fact be removed. I have since discovered that none of these features are offered on the phone. I have since learnt from MTN Soneike that the iPhone has 1 year guarantee with MTN + 1 year with Apple.