Yep, they call, I answer...no one responds...they call every four hours...like on the dot.

Calls.  On answer asks for confirmation of identity.  On asking why when the caller has not identified themselves, says they have personal, confidential information and must verify.  On asking, how do I know you're not phishing response is, "I'm calling from Tempe Arizona, I can give you my phone number, you can call me back(!!!)."  Since area code is visible in caller ID that's a laugh, besides appropriate way to establish bona fides would be to identify caller's busniess and let one look it up and return call.  Finally caller said they had address - wrong, and last four digits of social - wrong.   If it's a debt collector they should probably get their act together.  Right now it is indistinguishable from a phishing scam.  Odder yet I can verify in seconds over the internet that my phone and the address given are not associated.

Called, left no message.

They called my cell phone and then my work phone.

They call, and never leave a message.

Guy called me tonight and asked for me, when I wanted to know who he was he became a smartaxx. When he wouldn't acknowledge who he was and gave me information anyone would have I told him anybody could have that info and he got smart, so I called him a jerk and hung up on him.  Seconds later he called my landline and asked me why I'd hung up on him?  Told him he was a jerk and hung up again.  No idea why he called, but I refuse to talk to him.  He wants to conduct business, have him write me a letter.  He's a collection service about a credit card... I haven't had a credit card in 8 years.

Yep, they call my cell phone a few times a month looking for Olga. No Olga here and they say, Sorry we will remove this contact number from her name.... two weeks later: Ring. ring, ring, "Hi can I speak with Olga," lol. Google phone number check indicates it's a call from American Express Collections. I try to be nice but it's really getting on my nerves.

Very sick,Calls all day long, but when I pick up no one is there. I hear people in the background, but no one says anything.

calls and then just hangs up... calls frequently.

United recovery system
Credit card

Calls all day, every day.  I turned my phone off.

YEP. its a dept collector.  SIGH.

UGH they called @ 8am and didnt leave a msg but I know its a collector they have called before late or early or Sunday. ANNOYING!

Calls all day long, but when I pick up no one is there. I hear people in the background, but no one says anything.