Capital One Credit Card Complaint

Capital One Credit card department,

Credit determination California

I have a credit card with Capitol One. I was going through a divorce and separated bank accounts and updated the bank information for automated payments to all accounts. For Capitol One I added my account information and set up the automatic payments in - but something happened with their website and it did not accept my automatic payments successfully which I was unaware. Since I am used to everything coming out automatically I am not used to checking to make sure all payments are deducted as I have never had an issue in the past. However, I went to refinance and found out I had a 30 day late on my credit report. I called Capitol One immediately to find out why the payment was n't going through to find out that the bank was showing but not the automatic set up of my payments. I never received a phone call about my payment being late and now I have a 30 day late on my account when you can clearly see that I added my bank account and I have never been late with them and always paid on time. I think that they wo n't remove the 30 day late because I closed my account for this credit card so they do n't care about me as a customer. This is now affecting my credit score by - points when I have always paid them on time other than this unfortunate technical circumstance. They are stating that they ca n't remove it even though they agreed that it is clear that I went and set up the new account. Please help, this is not fair!