5 times same problem in less than a year

In September of 2014 I purchased a Samsung tablet 12.2 inch from the takealot website. From date of purchase up until current the same problem has come up 5 times with now being the 6th time and I am fed up. The tablet is still under warranty but with a few months left so I will have to go again to the repair centre and wait 5 days for repair and then back to normal for a month until the exact problem arises. Every time I take it in they advice me that the lcd has shifted and the software needs upgrading. As we speak ithe tablet does not come on at all. It's sickening that I pay almost 10 000 rands and can't use the device for less than a year. I need an intervention from head office now as I am sock and tired of sitting at your repair centre with the same problems.