Newegg Bad Customer Service, RMA Not honored Internet

I sent a motherboard in to be replaced or repaired, I inspected it with a magnifying glass before sending it to Newegg to ensure there was no damage done to it, which there was not.  After they received the board, they stated that they couldn't identify anything wrong with the board and that they had exhausted all attempts at finding the cause of the issues.  Then all of a sudden, I receive notice that my RMA will not be honored due to end user caused damage.  This damage was NOT caused by me, and I wouldn't have sent the board in for RMA had it been damaged the way it is now.  There are several pins in the CPU socket that are bent, this is clear as day, anyone could see the damage.  They would have seen this immediately after
receiving the product back, instead they claimed they could not find anything wrong.  Additionally, when I sent the motherboard in, it still functioned, it had a small issue with the memory, but overall it did work well enough to be used.

Now that I've received the motherboard back, it no longer works, and Newegg claims that it did not work when they received it, even though their notes say otherwise.  I've sent countless e-mails to Newegg regarding this, I've been polite and professional and I've been ignored and accused of lying about the situation.  I would not send the product back knowing that it was damaged.  This product was Not physically damaged when I sent it to Newegg.