Poor service and communication

Poor service and communication. I have been trying to cancel my service for months without any help. when i call them they tell me i have been handed over and when service desk has to transfer me to their legal department i am kept hanging and eventually they drop the call. i have been to Cresta branch and was told to call and till today i am not getting any help. i was last told they wont cancel until i pay erears of R350 which i paid on the 25 March 2019 but till today no confirmation of receiving the money and cancelling/closing the account