Why can't companies take accountability

Since ADH manages the warranties on my Samsung device I contacted them in March 2015 to determine when my warranty expired, Cherylize confirmed it expired in June 2015. The damage was only a hairline crack on the screen and the phone still maintained full functionality and I eventually only took the phone into Samsung Repair Centre in Century City on 23 May 2015 and was informed my warranty had expired. <br> I contacted Cherylize the following week and enquired. She once again confirmed that her system reflects the expiry date as June but advised me to look at my purchase date to be sure as their system is not always 100% accurate. I was not asked to do that in March when I initially made contact with her which would have prevented this problem.<br> To make a very long story short, I have since spoken to 2 levels of management at ADH and Samsung themselves. Till this day, nobody disputes that they had given me the incorrect information (which ultimately resulted in me having my phone taken in after the warranty expired). but no one, not ADH or Samsung will take accountability for the mistake and my phone screen is still cracked.<br> Response from both is that they cannot assist.