I had a card with AmEx for eight years with good payment history, and I have an excellent credit score. Out of nowhere, this company canceled one of my cards for "excessive contact" when I was trying to get them to fix interest charges on a promotional charge that I returned to the store. They never credited the interest charges after calling and emailing them, so I started writing them. Eventually they stopped responding to my letters. I had to open a few disputes recently because of not receiving items due to coronavirus, and I think this factored in to my account closure. As a consumer, you should be able to write in to get interest charges corrected and to be able to dispute charges for items not received or when you are charged a wrong amount. I understand what happened with the promotion and understand that because they didn't take the returned purchase off of the promotion, I got charged interest, but not one of their reps could understand me at all, which is terrible customer service. I had to call to see why my account was canceled, and it took forever for someone to figure out why it "might have been canceled." They also canceled my brand new business account with them, on which I made one purchase on and immediately paid off. There was absolutely no reason that account should have ever been canceled. If they didn't want my business they should not have accepted my application for that card. I am definitely reporting them to the CFPB. I urge anyone thinking about getting a card with them to be very cautious with this company.