why cant i get a free copy from Humble Bundle for Reciver???

Because you touch yourself at night.

Nah but seriously, try clicking the "Gift" checkbox.

well... you probably now have over 9000 copies.
if you have a humble account (and you probably have one) check there, their email system is oversatured (last time it takes like 8 hours for me to get the mail with my key).
Log-in on your humble account, the game should be there.

maybe its becuse all the KIDS that want CV for free and entering email refreshing and reapet

yesss finally got it!

Try the key resender. I still haven't received any emails for Receiver, but the key resender email went through right away and contained a list of all the receiver keys I had been issued (oops - I had meant to grab only one, but I'd also re-entered after an hour when nothing seemed to happen).