These people are running a SCAM! Do not fall for it!
They will claim you owe a debt which you actually do not owe. They will threaten to have you arrested if you do not pay them. They pretend to be a legitimate collection agency, however, it is all a scam.
Do not give them your social security number (they will claim they need you to verify it) or any other personal information. Tell them you know they are scammers and hang up. Then contact one of the three credit reporting agencies - Equifax, Experian, or TransUnion - and request a copy of your credit report. You are allowed one free copy each year. If you really owe a debt, it will be on your report. The Scammers may have told you that they are allowing you to pay them before it hits your credit report, but that's a lie. That's not how it works. Bad debts go on your credit report BEFORE they are sent to a collection agency.
The Scammers use a VOIP phone to spoof phone numbers of legitimate collection agencies, so the number you see on caller ID is not the actual number they are calling from. This list is just a few of the numbers they use: 941-757-8567, 877-575-9464, 877-818-9173, 978-705-6437, 205-209-4217, 203-567-4289.
Hang up and block their calls. Don't become a victim of their scam!