Problems with dialing a number

Every time I want to dial a phone number I receive an error message that says call not sent. I can dial the second time and call goes through. My wife's 6 edge does the exact same thing. This is very annoying when looking up a number and trying get to connect a call only to have to do it all over again. After the error message the dialer just goes blank and you have to enter the number again.

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