Impossible to Cancel Telkom Accounts

I have tried for 3 months to cancel my account with Telkom. My numerous emails are ignored, my requests for contact are ignored, my forms and online submissions are ignored. My social media complaints are acknowledged but seem to fall on administration that simply can't be bothered to fulfill their promises. Finally after submitting my documentation 3 times ********** respond to me and confirm my cancellation 23/07 - today I received a bill for July, August and September. I'm dumbstruck how an organisation can be so inept at processing requests, the left hand doesn't know what the right hand is doing. Pitiful incompetence, terrible administration and non-existent customer service and this despite the plethora of complaints about Telkom, how about working to improve you customer service and administration... the mind boggles. I would happily pay double and never have to encounter Telkom again.