worst customer service

I bought a tablet verssed on the 1st of September 2015. It went faulty I called the network supplier Telkom I was advised to take it in stores. Spoke to Vincent he told me to wait he'll Check what wrong first.And finally he checked I was it a Microsoft problem . I asked why he said it not but he refused to assist me .Told me it would be booked in for repairs. When Mashudu tried assisting he told her she will pay for a fine from her salary. I waited with rude remarks them making a jokes about me. I got at store at 4:30 left at 6pm with no assistance. People were assisted in front of me. I was told to do anything. Service was bad no-one explained why I was not assisted.and I was told they sold it a normal thing that happens , why sell an object that goes faulty. I was mistreated laughed at. Plz resolve this as it has given me a different picture as to how people are treated. From a disappointed customer.