I signed up for it and got a reply back the 27th of last month:
Hello Adrian,
Thanks for participating in the Xbox360Achiever.com Xbox 360 Live 1600Marketplace Points Card promotion. We have recieved confirmation that youhave signed up for true.com and your product will be shipped out in 10 to 14 business days. This is the longest it could take, we'll do our best to expedite it and ship it out within a week.
The address we will ship to is:
If you need to make any corrections to this address or have any questions,please reply to this email.
NOTE: We are now featuring online shipping of the Marketplace Point Cardsubscription codes. The above address is what we will use if you choosenot to accept your card online. The next email you receive from us willgive you the option along with the link to get your card online.
Cheers,~The Xbox360Achiever.com Support Team
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I tried using their contact support twice,but I have never recieved anything after the E-mail I just showed.I tried telling them I wanted it sent to my e-mail,but as I said,I never got a reply,wtf?

I want Double Dragon,Millipede/Cetipede,and save the rest for some Guitar Hero 2 DLC (When some new songs happen to come out) lol