Target Rejected LG 65" 4K UHD Smart LED TV Exchange

I have made the decision to permanently boycott Target stores. A couple of months back, I bought an LG 65" Class 4K UHD Smart LED TV. Last week, I happened to come across five dead pixels on the screen. The following day, I visited the store where I made the purchase, described the problem, and asked for a replacement. Unfortunately, my request was rejected on the grounds that the exchange period had already passed. Is all the money I spent just going down the drain? It's evident that there's a manufacturing defect, yet they're unwilling to accept responsibility. Hey there, just a friendly heads up - I would advise against making any purchases from Target. It might not be the best decision in the long run!