Although I did not call the number 866 609 8298, I believe it to be bona fide. This is my story:
I started getting robocalled everyday from 877 587 5727 asking me to call the above # re my Citicard. I ignored it because I do not have a Citicard.
Some of the posts claimed that they called the number and were told their Citicard was over 28 days late and some others said that Citibank processed smaller store credit cards.
I checked and found out that my Citgo card was handled by Citibank, and yes, I was over 28 days late.
My bill was due Oct 8 and I forgot all about it (oops). I received a statement dated Oct 12 saying "bad person you are late and we are charging you an exhorbitant late fee. You have until Nov 8 to pay the minimum due". The robocalls started Oct 14 which falls in line with the 28 days late claim.
I made arrangements with my online banking company to pay them Nov 6 (yesterday).
If I am correct, in about a week, the calls should stop.
I received a call today on my cell phone from 1-877-587-5727 telling me to call 1-866-609-8298 when I called the # back I was asked for last 4 of my social security and my D/O/B when I aksed why I was hung up on. Later I called 1-877-587-5727 and found out this is a phone # used to call contact phone #'s for Citi Banks Commercial Deliquent Accounts-This is your answer.