Samsung S4 ADH warranty

I booked my Samsung S4 in for repairs on the 15th of August after it had fell and the screen was damaged. The phone was purchased on the 1st of September 2013 so it was still under the 24 month warranty. The booking agent confirmed that the phone will be repaired under warranty and that there is nothing to pay for the devices repair. After not receiving any feedback i received a email stating that i have to pay R2000 for the repairs. I demand that a manager phones me to explain why I have to pay for the repairs and that it is not covered under warranty. Job ref SE132398