A furious Kelly Rowland accuses Guy Sebastian of cheating on The Voice

‘No! You ain’t following the rules’: A furious Kelly Rowland accuses Guy Sebastian of cheating on The Voice in a shocking promo which promises the ‘dirtiest clash of the year’

They’ve had a tumultuous relationship ever since she poured a glass of water over his head last year.

And on Sunday, Kelly Rowland is set to accuse fellow The Voice coach Guy Sebastian of ‘cheating’.

In a trailer released by Channel Nine to Instagram on Friday, they promise the confrontation will deliver ‘the dirtiest superstar clash of the year’.

‘No, no, no! You ain’t following the rules’: A furious Kelly Rowland (centre) is set to  accuse Guy Sebastian (far left) of cheating on The Voice on Sunday (Also pictured is Delta Goodrem and Boy George) 

The promo opens with the coaches- Guy, Kelly, Boy George and Delta Goodrem settling in to watch the final round of blind auditions.

In the next shot, the Destiny’s Child superstar pulls Guy up, accusing him of breaking the rules.

‘No, no, no Guy! You ain’t following the rules, your cheating,’ says hopping out of her chair and right up into his face.

Scandalous! A shocked Delta can't hide her disbelief as she exits the stage

Scandalous! A shocked Delta can’t hide her disbelief as she exits the stage

 A shocked Delta can’t hide her disbelief as she exits the stage.

‘What is happening?’ says a producer in desperation.

Boy George also seems furious with the first Australian Idol winner.

Uproar: Guy's judges are seen off-screen discussing the incident with a producer

Uproar: Guy’s judges are seen off-screen discussing the incident with a producer 

 ‘It’s ridiculous,’ he shouts at Guy as he storms off to speak to a producer.

The promo then cuts to the coaches without Guy, in deep discussion off stage.

‘I’m not trying to ruffle any feather,’ Guy protests.

'I'm not trying to ruffle any feather,' Guy protests in the shocking promo

‘I’m not trying to ruffle any feather,’ Guy protests in the shocking promo

Finally to his dismay, a producer leans in and whispers in his ear: ‘You have breached the rules’.

The explosive scenes follow what has already been a scandal-packed season for the singer who has been accused by viewers of favouritism, cheating and using his influence to get family and friends on the hit show.

Last Sunday, fans hit out after Guy’s best friend Matt Gresham auditioned the week after his younger brother Chris sailed through the Blinds.

Whoops! Finally to his dismay, a producer leans in and whispers in his ear: 'You have breached the rules'

Whoops! Finally to his dismay, a producer leans in and whispers in his ear: ‘You have breached the rules’

‘Guy Sebastian should stop bringing his friends on here. He did it last year as well, it’s a bit unfair to other contestants,’ one viewer tweeted on Sunday.

‘Must be written in Guy’s contract that The Voice producers have to give his friends and family airtime,’ another fan speculated.

‘Is there any more friends and family of Guy going to audition?’ a third wrote.

'Guy Sebastian should stop bringing his friends on here. He did it last year as well, it's a bit unfair to other contestants,' one viewer wrote on Twitter as Matt Gresham(pictured) auditioned last week, following Guy's younger brother Chris the week prior

‘Guy Sebastian should stop bringing his friends on here. He did it last year as well, it’s a bit unfair to other contestants,’ one viewer wrote on Twitter as Matt Gresham(pictured) auditioned last week, following Guy’s younger brother Chris the week prior