I have a significant issue with XXXX XXXX in connection with my former account, which impacted another separate XXXX XXXX account ( which XXXX cancelled although there were no overdue or outstanding payments ). XXXX has clearly erred in providing my account information to an unauthorized third party, or permitting this third party to obtain information about me. This is both improper and illegal. This third party made several attempts to contact my brother, an XXXX Gold Card holder, about my account, and made dozens of illegal calls to me in an effort to collect payment. To end this dispute, on XXXX XXXX, 2015 I sent to XXXX a letter by certified mail with a check for {$1500.00} that was expressly conditional upon XXXX accepting this " full and final payment '' to settle the account. XXXX cashed the check and then claimed that they were not bound by the terms of the letter and the check ( the latter of which expressly referenced that this was for " full and final '' payment for this account ). XXXX 's failure to acknowledge that they have accepted my settlement offer, and failure to advise the credit reporting companies that this dispute has been settled, adversely affects my credit score and could prevent my wife and I from obtaining a home equity loan/second mortgage for our home ( for which we are now submitting an application ). Having accepted my offer to settle this dispute, XXXX must a ) acknowledge acceptance of the settlement and b ) advise all credit reporting companies immediately that this settlement has occurred and expunge from my credit records any assertion of non-payment or late payment in connection with this account.