PLEASE CANCEL MY DSL FASTER

I received a free upgrade from dsl to fibre, which I accepted in June. The biggest mistake of my life. Not because the product is bad anything but Telkom's fibre is a great product but their service is most appalling. They failed to cancel the dsl so I'm being billed for fibre and dsl - from June. For 6 months, I've been calling Telkom to cancel dsl and for 6 months I'm being told the cancellation order is in the system. I have 6 reference numbers and the names of 6 call centre agents. Anele being the last agent who told me she sent an email to Pretty at escalations and can't help me further before hanging up on the call without even a reference number. I've even offered to come and squat at Telkom to assist with pushing the button to cancel this dsl product. TO NO AVAIL. Telkom to you want to take my business somewhere else?