changing mac address didnt work . .

i have trying to hack my neighbours wifi ,,
and he know about
it . .his wifi are using MAc filtering . .

i have
googling for whole weeks to find the way to
authenticate to the wifi . .my problem is when I type

aireplay-ng -1 0 -a ( bssid) mon0

it looks like this :

sending authentication ( open system)
and it keeps repeating and failed . .

I have use airodump-ng to spoof his mac
address . .and I also have using macchanger
to change my mac address like his
mac . .but i also cannot authenticate with the ap . .

Plz help me . .

bro guna la backtrack @ linux...ubuntu
aku xyah bayar bill pown...
sume guna jiran aku punya....

aku gune bactrack la tu , ,
msalah nye dia gne mac filtering ..