On XXXX/XXXX/2015 I had sent a payment by the approximate amount the account balance for {$780.00} with check number XXXX for Citi to be credited to the card ending in XXXX. Still today the date of payment it has not been proven despite efforts multiples me customer service and its research department of payments. I sent the evidence of the canceled by fax and mail check. They tell me that they are still investigating. They still me charged interest and minimum payments 
