A customer browsing in the HBH Woolacotts store in St Austell, Cornwall, accidentally smashing more than £5,000 worth of smart TVs.
Mike Collins, assistant manager at HBH Woolacotts St Austell, said: "Staff were devastated when it happened.
"I had been on a day off but came back and watched the CCTV footage. My manager just said 'you will never guess what has happened'. I was very shocked."
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Mr Collins said that a curved Samsung and two Panasonic TVs were among those damaged.
He could not confirm whether the customer paid for any damage.