Bank of America Credit Card Complaint

Bank of America Credit card department,

Ohio

Bank of America presented me with an online bill showing -/-/2016 as a due date and new balance. I went into their system and placed a payment on my account. They claim that the payment was made in the previous billing cycle. The only thing is their system said I was due for -/-/2016, so I as a consumer did exactly as any consumer would do- pay the bill. They then sent me another bill showing a missed payment for - -. Perplexed by the new statement and the status I proceeded to call to further investigate and found they showed me due but said me paying that day was considered prior to cycle. I asked how could that be if I am seeing the amount and due date and a request for payment? I consider this a deceptive practice since they had issued the bill and had no disclaimer advising me of when and how they would post my payment if I paid on that day. As a consumer I find this practice is unfair and deceptive.