CMRE Financial Services ( collection agency ) has classified my account with them as in Default, however I have proof of payment via my HSA with XXXX XXXX XXXX that my payments which actually exceed the amount agreed upon, were in fact mailed to them within the XXXX days of last payment. Their letter is generated when payments have not been received with the XXXX days. However, I have mailed them XXXX payments, XXXX of which were within the time indicated but the agency has not cashed XXXX out of the XXXX checks or posted them to my account. I called their account specialist, who just wanted to over talk me and repeat that they do n't have my payment. I have copies of the checks that were sent to them by XXXX XXXX XXXX. Do I have any rights, even when an account is in collections to expect that my payments are accurately posted and in a timely manner? 
Thanks you for your assistance, XXXX XXXX