Phone has been "locked"

Hello Mindy,

Let's work together to sort it out.

We have sent you an e-mail and please revert us with the requested information to assist you further.

Thank you.

This morning I am unable to use my phone as it says "This phone is safely locked by AntiVirus application."
I did not lock my phone, it happened overnight.  And my pin is not working to unlock it, the circle just keeps spinning.
I need assistance to resolve this issue as soon as possible.

Thank you in advance!

Hello Mindy,

Let's work together to sort it out.

We have sent you an e-mail and please revert us with the requested information to assist you further.

Thank you.