Citibank Mortgage Complaint

Citibank Mortgage department,

Home equity loan or line of credit Loan servicing, payments, escrow account California

My husband and I had a loan with Citibank that was paid off in a short sale in - 2011. Recently we attempted to obtain a new mortgage and were told that Citibank has been reporting us delinquent every month since - 2011 and as recently as - of this year. I have contacted Citibank dozens of times, sent pages and pages of documentation, talked to multiple service reps and they all say that they will get this corrected. It has been many months as recent as today, it is still on our credit report. Please help us to get this issue resolved. Thank you