BRISBANE Broncos coach Wayne Bennett has given the NRL's Integrity Unit a sizeable serve on the eve of the 2015 premiership kicking off declaring his has lost "total confidence" in rugby league's behavioural watch dog.

Speaking on the eve of his return home game against defending premiers South Sydney at Suncorp Stadium on Thursday night, the seven-time premiership-winning coach hit out at the Integrity Unit's plans to demand access to all NRL players' phone records should they be involved in any breach, such as the current drugs drama engulfing the Gold Coast Titans.

The Integrity Unit has come under fire a few times in recent weeks including it's handling of an incident involving two players from South Sydney who were involved in a fight and were arrested in Arizona.

"I have lost total confidence in them," Bennett said after training.

"I won't go into detail but you can't come out one day with a statement and the same day you rescind the statement in regards to telephones, laptops and god knows what else.

"By the end of the day, they've changed their mind again."

Asked to suggest a solution on how to fix the integrity unit, Bennett took aim again.

"I'm not going to answer their problems, OK," he said.

"But I have personally lost confidence in them and they are making a very difficult job for us clubs more difficult.

"We are so conscious about our image and what we have to do and they need to help us right now."

 Attempts to contact NRL officials as to whether Bennett's criticism of its $2 million "minder" were unsuccessful.

Earlier in the day the NRL issued a statement that NRL coaches would be banned from trying to deflect attention from their team's on-field performances by criticising the performances of match referees after games.