Bad after sales service

<p>Hande my samsung sm-j500f in for repairs as the software crashed and it was still under warrenty. Got it back the next day fix as they just did software on it. 3 days later i was busy updating google play store as phone requesed to do before i can instale one of my app the phone just went off and reboote to the odim start up screen. Took the phone back to samsung in refonia sandon and now the say its out of warrenty as i rooted the phone when i load software on it but they loaded the software 3days ago and i only tried to update google play store as the phone sayd i must. Now they say i must pay a R1900(phone cost new R1500???) to fix it or R200 to get it back not fix. It is unfair as the phone is still under warrenty amd samsung dit the software last and not me and i dont even know how to root a phone. I am very disponted in samsung. My job nr 172499. Repair center is mm all electronic. Me ref nr ********** 033 wen i phoned samsung head office</p>