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A company that uses robot voices to thwart phone scammers got hung up on Sunday night on 'Shark Tank'
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A company that uses robot voices to thwart phone scammers got hung up on Sunday night on 'Shark Tank'
![A company that uses robot voices to thwart phone scammers got hung up on Sunday night on 'Shark Tank' A company that uses robot voices to thwart phone scammers got hung up on Sunday night on 'Shark Tank'](https://dallasnews.imgix.net/1527105737-watchdogRobo_0525met.jpg)
A company that uses robot voices to thwart phone scammers got hung up on Sunday night on 'Shark Tank'
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