Poor aftersales service

I bought a Samsung Galaxy Note 3 about a year ago from Altec Autopage and yesterday the phone broke. I have since been on the telephone with several Altec branches, their head office and Samsung SA too, but no one is able to assist me. I need a replacement phone ASAP since I can't afford to be without a phone for even one day. No one is willing to assist me because it is a prepaid phone and not on contract. I did not pay almost R10000 for a phone to break after about a year of use, and since it has a 2 year warranty, it's unacceptable to be refused a replacement phone.