Namibia coach Dave Waterston has criticised his team for their slow start in the 37-7 defeat to Romania.
Isaacs goes over for a rare moment of Namibian cheer
The Africans had targeted the match in Tasmania as a potential first-ever World Cup win.
However, they conceded a try within four minutes and were 32-0 down at half-time.
"To put it nicely, it's disappointing. We had such high hopes but just didn't turn up for the game," Waterston said at the conclusion of their campaign.
The defeat was Namibia's seventh consecutive loss in World Cup rugby and the five tries they conceded took their tally for the tournament to 47 - a new record.
At the other end of the pitch they have run in only four touchdowns, including one from Eben Isaacs against Romania, the highlight of a second half they 'won' 7-5.
"We didn't arrive at the game until the second 40 minutes. It's regrettable," Waterston added.
"The second 40 minutes we were in damage control. We were
clutching at straws. We just had to stop the bleeding. We lost the game in the first half."
Asked if his team had learned from the World Cup, Waterston responded: "I'm sick of taking lessons.
"I've taken four lessons in this tournament. In fact, I've been taking lashes not lessons.
"The gap between the amateur and professional countries in 2003 is far greater than in 1999 where you could perhaps hold (bigger nations) .
"I don't believe that could happen anymore, the gap is just too big."
Captain Sean Furter added: "I wouldn't say I was proud, just satisfied.
"They really wanted to win, those guys. We aimed for it but it didn't work so well for us. But some of the play was good."