still have 23 days left on my warranty

I took out a Samsung Galaxy s4 on a vodacom at makro on the 27th of November 2013.. the phone had a 2year screen repair warranty.i went an upgraded my contract at vodacom on the 1stof November 2015..so i decide to use my 2 year warranty for the first time..i asked the agent at vodacom to give me some kind of paperwork that will help me to book my phone in at the Samsung shop he provided me with a paperwork that had the emi number on it...on my arrival at the Samsung shop the agent there didn't want to book in my phone in with the paperwork from vodacom.he insisted that I need to get my invoice from makro before he can book my phone in for repair.well 2 days later i i was back at the shop<br> Still under the influence that my phone is under warranty the agent checked my paperwork an booked my phone in...2 weeks down the line i decide to phone and check if my phone is back instead of my free screen repair the agent gave me a number to phone just for me to find out that Samsung claimed that the phone wasn't under warranty any more they claim the phone was booked in 2 days late for my warranty to be valid an had to pay R250 to get my phone back ,my fone is still under warranty 23days