call continually and never leave a message

From web sites I've seen it's a scam. I got a call at about 740am from a cali phone number from middle eastern/ indian sounding people saying I owe 450 dollars I didn't get. They said they wanted me to give them permission to take the money out of my account. They said if I didn't the sheriff will be coming to my job. When I asked them questions they slammed the phone in my face. I called from another number and tricked them. I asked what law firm they called from. Then he asked who I was and I said "I'm the guy you slammed the phone on" He the slammed the phone again. I also have a voice message from the first call from a woman I could barley understand.

DONT TALK TO THESE PEOPLE THEY ARE SCAMMERS!

Keeps calling, even when asked to stop caling me.

Wanting to loan me 5,000.00

Calling people unnecessary

check your hone bill caller attaches a (portal) to your cell phone bill $21.50

They wont even let my phone ring long enough to answer the phone to even try to talk to them. It makes me so mad.