Kept billing me for a service I cancelled and won't refund me!?

I had a 4mb ADSL bundle with Afrihost and I upgraded to fibre, so when the fibre was ready I PHONED afrihost and asked if I could cancel the ADSL so the person on the phone told me I can go onto client zone and cancel so I did exactly that. Clicked CANCEL service on client zone. There was nothing else I could do cause it said it was PENDING.. 2 Months later I notice that I am still getting billed. I login to check and a 4MB data line is still ACTIVE. So instead of CANCELLING it DOWNGRADED my service?? I emailed and said I cancelled this why am I still being billed I want a refund and this was the response thread..

From Afrihost: "On 2018-04-26, we have received your cancellation request for the package 200GB Capped DSL Data. However we have not received the request for your Telkom DSL line. It was cancelled on 2018-08-02. Your DSL line was active and that is why you have charged for it. Unfortunately we are not able to provide a refund for the active product. We wont be charging you from next month as you have cancelled the package. "

I responded.. "Thats exactly my point though.. The product was a bundle and I clicked on the service in Client zone and clicked cancel service, little did I know that when I clicked to cancel the service it wasnt actually cancelling the service it was "DOWNGRADING" it.. So really what I should have done was clicked to cancel the bundle package, WAITED for it to approve and then clicked to cancel the Line (again)?? This is ridiculous! Something should be done about this!"

And then got this reply from Afrihost .. "Unfortunately that is how the system works on our end, once you cancel the package which is bundled it goes back to it's orignal package then you cancel from there. Apologies for the inconvenience caused."

This in my opinion is shocking! If I cancel a service I dont want to downgrade.. If I wanted to downgrade I would have downgraded! Waste of my money for something I wasnt using.

I am NOT impressed with their level of service in this regard.