Bank of America Credit Card Complaint

Bank of America Credit card department,

Rewards Ohio

I have a Bank of America - - - - credit card issued to me on -/-/-. I have been using this credit card since the day I received it. On -/-/- I received a letter from Bank of America saying they closed my account. I pay my monthly bill every month. Never been late on a payment. I had a total of - reward points on my account. Bank of America is telling me since they closed the account that I ca n't redeemed my remaining reward points. They will not disclose to me on their reason for closing my account. Please help me on redeeming my remaining points.