XXXX has been harrassing me for payment of a transaction that they made a mistake on months ago. After checking my bank records, I was willing to pay the amount. However, the confusion during this time for that amount to be overlooked was due to some fraudulent charges on my account they were investigating and has switched me to another card. They concluded their investigation and credited me those charges. But then they claimed that this particular amount was still outstanding and started to charge me late fees for it. I have made about XXXX lengthy call to them to finally track down how this amount was missed by them and differentiated from the fraudulent charges that was settled. Although I am willing to pay the actual true amount of the transaction I made and that they made a mistake and missed, they want to add late fees to it. I was only made aware of the transaction and differentiated from the fraudulent charges a couple of weeks ago. Calling and talking to the customer representative and even their escalations supervisor is not bring any results. I need someone to investigate XXXX credit card for their incompetence and harassing me on a daily basis with multiple calls. Thank you. 
