Product: Credit card

Chase Credit CardXXXX Latest correspondence : I can understand a resolution might require a secure email, but not a 'XXXX  ' letter. A few more late payment reports and you'll get it down to XXXX. XXXX XXXX You could've had the decency to say it was a dispute if you had to report it at all. I hope you don't treat all your loyal customers this way. So be it. 
XXXX XXXX XXXX My newsletter today. You may find it amusing : Like many of you, I have paperless billing on all my accounts. There's also a {$10.00} discount each month on some of them for going paperless What's not to like? So, I don't pay too much attention to my statements. 
My XXXX charge was {$51.00}. Not bad. My XXXX charge felt like too much, so I took a deep dive into my statements. The {$46.00} charge on my statement for XXXX had magically become a {$5.00} dollar credit. Didnt question it, cause I return a lot of defective or wrong size merchandise to XXXX XXXX Then on the XXXX statement, I noticed a {$46.00} previous balance. 
How could I have a previous balance when I pay in full each month with auto pay? I tried to get an answer to that simple question for 2 weeks. Never did. The answer is the {$51.00} I paid in XXXX was credited again in XXXX. I cancelled auto pay, tore up the card, buried it, and XXXX  the XXXX. Told them I would not pay till I got an explanation. 
Shortly after the due date, I found the executive office email address. That did get a form letter telling me how concerned they were, and they were working on it, and they would have my answer within two weeks. This brought us into XXXX. Finally last week I had a Voicemail. They wanted to talk to me about the account and gave me a number. It was 10 digits with a 9 digit extension. Then 30 minutes of elevated music was just too much. 
My reply to that : No way I could get XXXX # right : Sorry I missed your call. My inability to hear is exceeded only by my inability to understand. However. I'll be glad to answer any email information/questions you may have. Also, I am unable to go through XXXX # w/o transposing, so there's that. I promised a swift reply. 
No email, but I finally answered a phone call and was told the {$5.00} credit was from XXXX credits. Nope. The XXXX credits were included in a previous statement. Difficult to believe a major corporation would alter a statement to try to explain what was actually a double credit- The {$51.00} credit was issued for both the XXXX and XXXX statements., so I still owed {$46.00} for XXXX, the Balance Due. 
Just finished a call from my attorney-I agreed to send him all the receipts and correspondence. He seemed quite interested in a contingency XXXX XXXX of any settlement. 
XXXX, I tried the phone call XXXX called me. It's possible, maybe probable, that I misunderstood her. She said the credit that I was concerned about was an XXXX credit at {$41.00}, which caused a previous balance. I am telling anyone who will listen to me that it was a $ XXXX, for XXXX, and duplicated for XXXX. It was a charge in credit from a previous. And if I did misunderstand, I am profusely sorry. When the time comes. But if you have some information or if you have some explanation, please. just send me an email Thank you so much. 
XXXX just called and promised a resolution in writing-no more phone calls. 
I assume that means XXXX XXXX XXXX XXXX XXXX  ) Thursday XX/XX/XXXX XXXX