I have no answer from on a graded morgan dollars

About 7 seven days ago I ask NGC for help on a morgan dollars, but did not receive a answer. since Amy left ngc, there has been little to no help from ngc. On 11-20-10 i had sent in a 1879CC, to be graded with some other coin. this coin is 2421105-009. I have looked over this coin and do not agreed it is a G-6 coin. I photograph grade it and took to my coin dealer and he looked at it and agreed that it was miss graded it should have been a GV-10 How can i have ngc recheck this grade to see if it was under graded. Thanks for your help. NGC will not answer lettle's. Don (Amarillo)

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