AW13 GPU Warranty/Replacement

My AW13 960m failed. Dell has replaced the m board three times. The problem is they keep installing an 860m and call it good. They just don't get it, I paid for a 960m, not a gpu that has been discontinued in this line. Anyone have a phone number other than the ones listed on thier website I can call and resolve this issue. They must have more invested in my AW13 than it would cost for a new one. And yes, still under warranty. Thanks Ahead