Some Unprofessional People at MCM

What's wrong with the MCM people, managers, are soooo rude and unprofessional. I can't count the times I called them about my settlement amount and that already have been zeroed in. Everytime I call MCM, is a "nightmare". I already called Michelle Lusk and left a message to call me back but never got a call back. May I please suggest to train these people to respect people who call them and willing to pay. I was a victim of cruel verbal disrespect and dishonesty by these people. Mr. Jeffrey Gladstone denied that he sent me a letter prompting me to pay more when I paid off my debt already. Miss Lusk, are you even aware of these terrible feed back, please hear us and do something. You are supposed to be an "Advocate" to people like us who paid off our debt. Hope the next time I call, at least one person is professional enough to address my concerns. Just few minutes ago, a certain Tyron just yelled at me several times. Please hear you recordings Ms. Lusk.