Poor customer service and policy

So my uncle had bought a Dell G5 5587, when I received it, the graphics card had a code 43. A technician looked at it and decided the best course of action was to send it in for repair at their depot.  I waited around a week to get it back and when I did, same error code! Another technician later, he wanted me to reinstall the OS but didn't have a flash drive, had to wait two days to get one, during the reinstall process, we encountered an issue and suggested to send it back to the depot. At that point, I thought I was done and wanted a replacement. So I contacted them over live chat and they said they would do a exchange but they would only give me a refurbished model in exchange for a brand new one, that is unacceptable. It felt like I had no choice so I begrudgery accepted, but another form on the community page told me about twitter so I went to the twitter support, I canceled the refurbished replacement because it wasn't fair. After two more technicians looked at it, they  wanted to troubleshoot more but this time, I was done so I requested a replacement but they then tell me they couldn't guarantee me one even though 700 hundred dollars was paid for a defective product they pushed out. This isn't right!