Citibank Credit Card Complaint

Citibank Credit card department,

Credit line increase/decrease California

CBNA did an unauthorized Hard Inquiry on -/-/2017. Their information mailing is - - - -, - -, SD - and their contact number is -. When calling the number, the company stated was CitiGold and the only way to talk to someone was to enter my social security number- and I 'm not doing that. I have no idea what this is and did not authorize/approve ANY company to do a hard inquiry. I did ask for a credit line increase from Citibank on a credit card but nowhere did it say on the request that a hard inquiry would be preformed. Can you please remove this Hard Inquiry? Thank you for your time