I sent my expensive 17" P70 mobile workstation w/Xeon E-1505m in to Lenovo to replace a failing ethernet port. I just discovered months later they returned the machine with an I7-6700HQ, a lesser processor. When I asked support for an explanation why the switch, they just said send it back full stop. I requested to talk with a repair tech, or manager wanting to know if there might be a good reason for the switch like an out-of-production motherboard, etc. They said I can't talk to anyone in repair center, but I could return to depot repair in a box. I'm quite disturbed that I can't get any answers. Lenovo support Atlanta is like talking to a vending machine. For 20yrs I was a loyal Lenovo user. After this not anymore. I will never buy from them again. How hard is it have a 2 minute call from a manager? They have lost my trust by demonstating their precious process is more important than customer concerns. They've really gone downhill.
