Poor aftersale customer service

I put a request to cancel my services. I was told I had to wait until the 28th of Aug to put through my request, which I did. The consultant did not advise me that you require 30 days notice nor was this mentioned to me on the onset. I am been billed for another month due to the *********** service consultants who mislead and miss valuable information. I escalated the issue however no one has reached out to me. Whenever I try the call center I wait on line for more than half an hour without any joy. The whats app chat is delayed and the consultants keep ending the chat. I am quiet disappointed in the service provided to me and I refuse to accept such mistreatment.