Complaint Review: Law Offices of Steve Mattas

I recieved several emails from ACS which is a parent company that owns and operates more than 350 websites, they said i applied for a cash loan of $300 online and that I never paid the loan back.  I told them that I needed some more information of when I recieved the cash into my bank account and proof.  I contacted my bank and they do not have any deposits of $300 dollars into my account.  They say it was from my current bank 2 years ago, Well i realized that I have only been with my bank for over a year and this was done 2 years ago. They will not call me after I have asked to speak to someone on the phone instead of email.  They keep saying they will sue me etc... Now I get a phone call from a lawyer by the name of Steve Mattas from the Bay Area.  He has a heavy accent which I can not understand him, he called and basically said i had until 12pm to pay $100 to resolve this matter but I could not use check or atm.  He wanted me to use some other type of way to pay which was a red flag for me.  He still calls and bothers me.  Has anyone recieved this type of call?