Going for the 2nd month and still not resolved

Its going for 2months now since this error invoice billed has still not been credited. See ticket SST093946 created by a complaint here for a credit of INV-133235 to the value of R499 that was billed after service has been terminated and router returned. This is now the 5th complaint and every single time im promised it will be resolved and still has not been done, I really feel sorry for the current Supersonic Customers who will clearly all have to go through this same experience, I have recommended Supersonic still all the way to friends and colleagues and im starting to regret this.