Andy Hessenthaler is fuming after Gillingham capitulated against Accrington, losing 4-3 to concede four goals for the second weekend.
After losing 4-3 against AFC Wimbledon last Saturday, the Gills were again on the wrong end of the odd goal in seven at the Crown Ground.
The Gills boss had emphasised the importance of keeping tight at the back in the build-up to the fixture, but his plans were torn to pieces as it took just 45 seconds for Michael Smith to score the first goal of his hat-trick which helped Stanley into a 4-1 half-time lead.
Hessenthaler told BBC Radio Kent: "We worked this week on defending as a group and we went out there and did the opposite to what we've worked on all week. I was speechless at half-time and we didn't see that coming.
"I'm not just blaming the back four, it's about the whole team. The goals we conceded in the first half came when we had the ball.
"If people are not going to listen to what we want them to do and what we are telling them leading up to a game, then they won't be in the team. It's not acceptable."