Citibank Bank Account Or Service Complaint

Citibank Bank account or service department,

Other bank product/service Making/receiving payments, sending money North Carolina

In the last few days ( -/-/- through -/-/- ) we have gotten 5 calls from a number identified on the caller id as citibank:-. The caller asks to speak to my father, an elserly gentleman. When pressed as to what the call regards we are told he owes $500.00, or the caller hangs up. He owes no such amount nor does he have an account with citibank. I am reporting this because the calls are a nuisance and harassing. We wish to report this phone number as a scam. Thank you.