EDCON - RCS Credit - MBD Attorneys - PATHETIC COMMUNICATION STRUCTURE with NO SYSTEM INTEGRATION.

My account was paid up on time but was wrongfully handed over by RCS to MBD attorneys. Since last year March I have been harassed by MBD who cannot contact RCS for the paid up letter, after contacting RCS directly, they refuse to send me the paid up letter to submit to MBD (Which I should not be doing). Spoke to Thabane Mokoena the store manager of Edgars the Glen, he mentioned he will resolve the issue after sending statements that he required but eventually he abandoned ship, no contact. Then I was contacted by a GM from RCS - Nompi Mkwane who stated she cannot assist as the account is closed (No further payment required) and a payment letter is not possible. There is no communication between Edgars - RCS - MBD Attorneys. As an ex customer I have been trying to resolve this issue since last year but to no avail. WHAT DO I DO?