I received a letter from you in Oct. or Nov. saying I could resolve my account by paying a certain amount which was around $215.00. This amount was less than the disputed amount but your letter stated the issue would be closed as paid in full if I submitted the above amount before the deadline. I highlited the due date and mailed my check in. It has since been cashed but I'm still harassed by another collection agency. They informed me you accepted the payment as a partial payment and did not close the case.
Do I need to get a lawyer to settle this dispute?