To be sure who is calling ask them to provide full name along with Tax I.D. Number. Once you ask them for there tax i.d. number most likely they will provide a phone number for you to call back. Let the know you want to be sure as to who you are talking with as they ask you personal questions as well. Equality under the law is paramount - who knows the caller may be a tax fugitive or working for one so you will want to report them to revenue collector.

Theyve called both my phones and I dont have anything with Capital One?!

he is very bad he keep calling and asking for names he did not geve the name where he calling from talk very bad.

its a collection agency on behalf of Capital One

keep calling from +1 877-943-1535 to my cell while I am working.  i have told them not to call anymore.  Today I answered and just said "you have been told not to call thi number".  so, they called from (905) 490-3698.  girl says"you shouldn't hang up. we have nothing on record that we can't call you'

Did not identify herself.  Just started to tell me off.

Had to check her to find both are Capital One.  And yes, they have been told to use my home phone only.

The only reason my cell is we have family in hospital.