Time Warner Cable Billing Error Not Corrected Nationwide

After several phone calls, Time Warner Cable Customer Service finally verified that the equipment they charged me for after disconnection was being rented to the new owner of the condominium. They said the serial number matched. However, they did not credit my account as they promised to do. They turned it over to a collection agency and notified a credit reporting agency. When I called today to let them know I filed a complaint with the New York State Attorney General's office, Customer Service told me I had speak to Collections and Collections told me I had to speak to Customer Service.