Term & Conditions to Repairing Cracked Screens????

I recently bought the new Samsung S6 and have had it for about 2 months, last week I dropped it and cracked the screen. I took it through to Contantia park where I handed it in and asked them to please check the phone cause it often switched itself off as well and got hot without being on... even before I dropped and broke my screen... I called Samsung to follow up to see how far they are cause I use my phone for business I was then told I need to pay R1000 sum odd in order for them to repair my screen????? REALLY WHAT THE HECK??? its still covered by warranty and I get 1 free screen replacement, I was told if I do not pay they will not fix it!!! I had a tempered glass cover on as well as a cover bought from altec auto page where I got my cell from. I never knew there were terms and conditions to the replacing of the screen so please explain!!! I have always owned a Samsung from the G800 to Samsung S1,S2, S3, S4, S5 and now the S6 and not one days problem with any of them, I don't abuse my phone and now I sit with all this bull **** seriously !!!