Telkom charging me for a service that I am cancelling

I installed Openserv fibre at my house. I obviously couldn't cancel my ADSL yet because then I will sit without any internet. I work from home and I am dependant on an internet connection. My ADSL is also through Telkom. My fibre got installed and I sent a request to cancel my ADSL, obviously because I will be using the fibre. I also requested that Telkom to please not charge me for the ADSL this coming month because I will not be using the service and its not fair that I have to pay for it. I'm not moving to another service provider either. My fibre is still through Openserv. My query was just closed without any consideration. My cancellation is also still pending, still waiting for someone to confirm my cancellation. This is very poor customer service. I feel that I am being ********** because I have to now pay for a service I'm not using. This is how they make money off you by delaying cancellations and making you pay because you need to give notice. No, I don't have a contract with you, I pay month on month. When I want to cancel you have to cancel.