Call Centre - Incorrect Infomation

I have a Samsung S4. Recently the phone keeps hassling me with notifications to update my OS. Eventually I gave in to the annoying notifications and clicked the upgrade button. My phone downloaded the Lollipop OS but its been an absolute nightmare!<br> <br> The OS is faulty, my phones battery seems to run down quicker than before the upgrade, my phone is sluggish, my apps often crash seconds after opening.<br> <br> I contacted Samsung via their online forum and received a phone call within the next 10min. The lady I dealt with said that I needed to go to a Samsung customer care centre to get them to fix the upgrade. I told her where I stay (Hatfield) and she said I could go to the one in Grasfontein.<br> <br> After rearranging my schedule and taking a 20min trip to the store I am told that they do not deal with cell phones and they cannot assist me.<br> <br> I have now wasted my time, petrol and are stuck with a phone with a faulty OS which I don't know how to fix!