TERRIBLE SERVICE / BAD ATTITUDES

My Samsung S3 is still in excellent condition. It is about 3 months old. It stopped working and not sure why. The screen does not slide up to unlock. I am still receiving calls, emails and messages but I cannot unlock to respond. I then went to Samsung Gateway about a week ago and spoke to a lady about this issue and she did not even let me complete my explanation and basically cut me short and told me to buy a new phone. I am utterly disgusted in the treatment that I received. I cannot afford a new phone. This phone was a gift and I cannot just throw it away because Samsung wants to make money out of this. I will be deleting my contract and I hope for future buyers that they be very careful with Samsung products and think twice about buying it. SO NOT IMPRESSED..