No response for cancelled contract send 3 times to Telkom

I send through a cancellation for my data sims to be cancelled. I have now send this through 3 times with no feedback and no confirmation Why is it that Telkom got so bad? Is this because all the employees left the company? Terrible service. I am not happy. I even told the employees i will log a complaint on HelloPeter, No response what so ever. I get the feeling that Telkom employee do either not care about customer or they do not know what to do. I want this cancelled. I also received a new invoice for 3 April which includes this sims card. I will cancel the debit order so that nothing goes through. I want email feedback please