RMA support/lack there of

I've been having real problems getting responses as far as my RMA process. Long story short I purchased a Blackwidow ultimate keyboard back in May. After two months randomly lights stopped working and keys would intermittently work. I started the RMA process which during that time seemed pretty smooth. On Aug 4th, I was provided a shipping label to send the damaged unit back to which it would be replaced when it arrived. I sent it out a few days later and based on the tracking number it says it was delivered on Aug 24th. Since then I've had what seem like two automated messages that say they haven't received the unit, even though in my responses I provided the tracking information which clearly shows it was delivered. But of course, the automated responses didn't reply to the tracking number. My last message I sent was on 9/1 basically stating that tracking number shows the damaged keyboard was not only sent but delivered. When can I expect my replacement unit. 7 days have passed with no reply. I'm losing my mind, any help would be great. I have the RMA# and Case# if that makes a difference.