Screen lock

I think an app or 3rd party source changed my screen lock pattern password. I can no longer get into my phone, and Google will not allow me to change the lock password. I had activated vzw protection and Motorola device help but they have some how been logged out. Is there a way thru safe mode to unlock the screen and even backup the device? If not what is the command prompt to unzip files saved via sd card to give the command to unlock the screen.

Any help is appreciated

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