called left no message.. not in my area code

I could barely understand the lady, who seemed to be telling me that I was overcharged. She kept saying she was from Merchant credit card services.
She could not tell me what bank or what card she was calling about, besides saying visa.
i gave her no info and she hung up.

I just received a call from Nikki Barns who said she was from Merchant Service Inc.  The caller ID showed Waxahachie, TX and she wanted me to fax in my bank statement showing my merchant services fees to her fax # 877-720-1496.  She said she would wait on hold while I did it and could save me money.
I googled this number of 469-280-0342 and hung up!

DO NOT GIVE OUT YOUR INFORMATION TO THESE PEOPLE!