GameStop review: Purchased used controller and warranty.Con. Doesnt work, want replace

Last thursday I bought used xbox one controller. It doesnt work right so I returned it and was told no reciept, no exchange. Would be fine but I was told I did not need to keep up with reciept. Manager said girl was new and didnt know better. I showed him on my phone where I purchased it. Was told it didnt matter. Im disabled in a wheelchair and saved 3 months for this used controller. Its about the only enjoyment I have in life. Its not my fault she was not trained properly. I was able to prove my purchase with cellphone reciept so its not like I had no proof at all