Product: Checking or savings account

I received a letter from Chase Bank, dated XX/XX/XXXX, stating all my accounts will be closed due to " unexpected activity ''. My initial thoughts were this has to be a scam but I looked into the matter anyways. Thankfully I did. It's not a scam. I have been unable to discover any additional information or reasoning for the action. 
- On XX/XX/XXXX, I contacted the customer Service line and spoke with a supervisor, XXXX. She told me the bank has a right to do this without explanation. She said my only course of action would be to ask a Branch Manager to ask for a 2nd review. 
- On XX/XX/XXXX, I went, in person, to speak to my neighborhood personal Banker, XXXX XXXX, in XXXX, Texas and she informed me all information was confidential and would not be released, even to me! I requested a 2nd review. She forwarded my case to the Vice President Branch Manager, XXXX XXXX XXXX, and assured me she would contact me. She did not. 
- On XX/XX/XXXX, I visited my previous neighborhood branch in XXXX, Texas to close my lockbox account. I spoke at length, in person, with the Vice President Branch Manager, XXXX XXXX, and received no additional facts and I requested a 2nd review. 
- I contacted by phone my long time Private Client Banker, XXXX XXXX from XXXX, Texas, assigned to my accounts and requested a 2nd review. He assured me he would get back with me. He has not. 
Clearly, I'm being stonewalled. 
Facts : 1. I was a customer of Chase for 40 years.

2. My checking account was over 30 years old.

3. My credit cards have always been paid in full and on time.

4. My Credit Score and Credit Report were nearly perfect with a score of XXXX plus, before this process started. 
5. I'm not a felon nor have I ever committed a crime.

6. I'm a respected, life long, naturally born American citizen of good character.

7. I've always filed my taxes timely, honestly and PAID in FULL.

8. Chase has made a considerable amount of money on my annual fees and also the merchant fees they have charged on my credit card transactions over the years.

The damage I have received from Chase 's actions include : 1. My credit score has been reduced by them closing my Credit Card Accounts.

2. I attempted to apply for a credit card through another Bank. I was denied saying " Based on your credit report from one or more of the agencies on the back of this letter, number of bank cards tradelines opened in the last 24 months '' ( see attached letter and notice the credit score-XXXX  ). This also caused a hard credit check, further reducing my credit score. Currently my credit score is somewhere in now in the mid-low XXXX 's. I don't seem to be able to obtain a new credit card as a result of XXXXhase 's actions. My credit cards were Chase cards a

nd one or two had been opened within the last 24 months. 3. I've invested a huge amount of time opening a new checking account, changing bill pays, direct deposits, changing credit card payment sources on my other accounts. 4. The XXXX XXXX XXXX XXXX this continues to perso
nally cause me is significant.

5. As an FYI, I filed a complaint with the XXXX. Chase Corporate offices contacted me saying the case would be reviewed. No additional details were provided. The ruling from Chase was the decision to close my accounts would remain.

6. I filed a complaint with the Fedaral Reserve and they refered me to your agency.

I still have ZERO explanation from Chase as to the reason for their actions. 
XXXX XXXX