A customer was left fuming after an Amazon Alexa device accidentally ordered cat food after hearing an advert on TV.

Amazon Alexa

Amazon Alexa

The advert reportedly triggered the device to begin the order and the customer complained to the advertising watchdog and dubbed it ''socially irresponsible'' the Metro reported.

Originally screened last October, the advert features people using the technology in different situations, and the customer's device reacted after a man could be heard saying: ''Alexa, re-order Purina cat food''.

Despite complaining, the Advertising Standards Agency said it wouldn't be possible for a customer to not know if something had been purchased from their account.

They said: ''The complainant had cancelled the order themselves, but we understood that had they not done so, the order would have been cancelled automatically.

''Therefore we understood it would not be possible for a purchase to be made without the account owner's knowledge.

''We concluded that the ad was not socially irresponsible and did not breach the code.''