Unpleasant experience for the second time

The day I called in in November to cancel my contract for January notice, somehow I knew I will received such experience. I am still awaiting for their so called manager to give me feedback since the 15Jan as she promised.... They do as they please in my bank order submitting unauthorized debit order for contract that should hav ended in Jan and cancellation notice given in November.... I regret why did I give them a second chance because my first experience years ago was exactly the same