worst ever service in 13 years

My contract termination date was June 2015. As per contract, I was supposed to sent email to request termination. No one responded. I sent another one in July, again no response. In August I called, got given another email address. Still no response. Last week I check my statement online. There is a 959 fee for data live psd. I have no idea what that is. The call centre wasn't helpful they gave me numbers to call, all didn't connect at all. Had to call call-centre again. Supervisor claimed that he will escalate the billing issue and the contract termination issue. A week later, no feedback, no communication. I call the call-centre, and nothing. This is just nonsense.