Computicket - useless service

Utterly disappointed in Computicket today with the Match in Africa Federer vs Nadal tickets. We were first in line in store (Checkers Woodland hills) as we were waiting in line from early morning before the store opened. When the sales opened, the tickets did not want to process. It said we cannot purchase 6 tickets, not even 2 tickets. It said two tickets are too many. This was at 9:00, so the tickets were not sold out yet. We could not even purchase 1 ticket and all the time and effort was for nothing. We tried everything, but the useless service of Computicket made it impossible to get tickets.