Bank of America Credit Card Complaint

Bank of America Credit card department,

Rewards California

I 've been - ( - - ) credit card holder since -/-/-. My credit line was $20000.00, I never went over the credit line limit and have always paid my balance on time and in full. This credit card has a reward program with 2 % cashback on each dollar spent. My credit card was suddenly closed by the credit card company in -/-/-. When I called to inquire about the reason for closure I was told that the credit card company can close any account for any reason or no reason. I legitimately earned $180.00 cashback which I tried to redeem but was not able to do so, online nor over the phone. I was told the rewards were forfeited because the credit card was closed. The rewards show in my account as available as of today -/-/-, I earned these rewards ( cashback ) by using the credit card. I did n't do anything against the terms of service but - - - does n't want to pay the rewards. Please help me to deal with this company to get my rewards of $180.00 I earned. Thank you.