Worst customer service

After I have logged a ticket to close my account 27 March, I even spoke to an agent after holding on their line for more than half an hour. I explained that I had sold my house and the new owners can not get internet until my accelerit account is closed. I received confirmation from vumatel that the line had been cancelled. However Accelerit are still billing me and the ticket I logged was responded to by saying my service has been re-instated? Be aware of this company the customer service is the worst.