unfair treatment

I went into the bank and asked for a Nov 2016 statement and the teller requested Jan-Nov 2016 which I did not ask for and guess who accrues the charges? yes me. I was surprised when I asked for a statement for February 2017 and I was told they will not send that because they sent a statement once a year. I requested this close to 2 months ago and I need it to clear my name with some creditor who is charging me interest for every time i'm unable to answer their calls or provide the statement. To this day I did not receive anything but they were able to send me incorrect information for 2016 of which I asked face to face from the teller. I'm not a millionaire nor do I even have a positive balance but I pay monthly for a service that is not free, due to me and the bank is OBLIGATED to provide as per our contract. I have tried but nothing so maybe this will help me