The deposits that were made for additional principal payments were not fully credited to the principal balance. According to the bank, some of the checks deposited were returned. 
We were never informed of the returned checks. Despite numerous requests to get copies of the returned checks, the bank failed to provide us with copies of the returned checks. Even though our requests were very specific, instead of copies of the returned checks, the bank kept sending us the account transaction history. 
[ The detail description of the issues is attached herewith. ] 
