USAA Savings Bank Account Or Service Complaint

USAA Savings Bank account or service department,

Checking account Account opening, closing, or management Missouri

USAA Federal Savings Bank has tried to get in touch with me with this letter dated - - 2016. Then on - - 2016 I get a second letter about my checking account. I have not been able to get into my checking account for many months now. I have sent in money to cover the $34.00 amount that was not paid. Seems USAA returned that payment I sent in on - - 2016. Why are they allowed to do this? I still feel that the have discriminated against me due to my age as I am -.