Flagstar Bank Mortgage Complaint

Flagstar Bank Mortgage department,

FHA mortgage Loan servicing, payments, escrow account Arizona

Flagstar Bank is my current mortgage servicing company and they are showing me as having made late payment during -/-/- and -/-/2016. I have received a letter from Flagstar Bank research department in which they state this was a mistake on there part. I would like Flagstar to resolve this issue ASAP and report my payment history to reflect as current and no late payments. Thank You.