The owner of a defibrillator phone box has hit out at Greggs after the bakery chain slapped an advert over its window.
Jayne Biggs, founder of Heart 2 Heart, bought a BT phone box on the Gorleston High Street, outside Co-op Funeral Care, six months ago.
The charity adapts disused phone boxes into defibrillator stations.
A Greggs ad was slapped back over the window of the phone box overnight (Image: Heart 2 Heart) Upon purchase, the ex-payphone had a large Greggs advert plastered on its front window, which Ms Biggs had always planned to remove.
Local company Iclean worked for eight hours to scrape through "six layers of glue" and remove the poster on Wednesday, finishing the job at about 10pm.
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But the ad - showcasing the breakfast combo of a sausage, bean and cheese melt and a latte - was quickly slapped back on by contractors overnight.
"It's just unreal how quickly it was done," Ms Biggs said. "I rang head office and they knew nothing about it.
The phone box's new look was short-lived (Image: Heart 2 Heart)
"I'm sorry, but someone at Greggs must know something.
"It must've been done in the depths of night. I think someone is a contractor and they get paid for how many they put up.
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"If they had offered to pay me for advertising, fair enough. But they are getting free advertising on phone boxes that don't belong to them.
"How selfish. It's just unreal."
The defibrillator has been cleaned once again and a new indicator has been added to the front.(Image: Heart 2 Heart) The window has since been cleaned again and Ms Biggs has added a new graphic to the front of the phone box in a bid to deter advertisers.
Previously, only a sign on the side of the phone box alerted passersby that it was now a defibrillator owned by the charity.
Greggs has been contacted for comment.