I want to dispute a collection posted in my credit report from XXXXI had an account with XXXX until XXXX XXXX on that date closed the account but they said it was an outstanding balance. I did not agree with the that but XXXX started calling me every day and send me letters and finally they sent the information to credit bureau. when I saw this I decided to pay that amount so in XX/XX/XXXX I made two payments, the first for XXXX usd made by my credit card XXXX XXXX, the second for XXXX usd made using my debit card XXXX XXXX XXXX. Despite having paid comcast he continued calling me and sending me letters demanding payment. In XX/XX/XXXX I made a dispute and they temporarily removed the information from my credit report. Later I received a phone call from an agent telling me that XXXX was not able to find the payments so I send them the statements of XXXX transactions. This month comcast appeared again reported the debt to the credit bureaus even when I sent my payments proof. I would like to know where are the payments that I made. Even if I paid again what security i have that the same will not happen.