WORST CS EVER

I am trying to get confirmation if my cellphone contract (CellC) has expired. I acquired a contract with Blue Label Connect 2 years ago. My contract with them was supposed to have expired already. I have made well over 10 phone calls to their CS with promises that my query has been escalated and someone will call me back in 48 working hours. It's been 2 months already and no one has called to confirm if my account has been closed or not. my details are not even traceable on their system. CAN SOMEONE PLEASE HELP WITHTHIS ISSUE