Brand New Tab sent for repairs, still not fixed

My mother, who is not so techno savy bought a new sinqutab Tablet in March 2015, up until this day the tab has not worked. <br> <br> She had been back to the store twice to ask for assistance in setting up the tab, which should have been done the day she bought the tab, however the sales assistant kept passing on to someone else. <br> <br> She was then told they needed to send the tab away and upon return 2 weeks later, IT STILL DOES NOT WORK!<br> <br> I personally have had many problems with goods bought at Game stores, the quality of goods and services are disgraceful. <br> <br> Till today this tab is not working and I would like some real assistance with this.