Horrible Service from Telkom

I cancelled my Telkom ADSL subscribe on the 26th of February 2018 and my request was sent to Nokuthula Yona who confirmed receipt of email. Weeks later no feedback was given in then contact Nokuthula for feedback which dragged for another a week . To cut the story short mid March 2018 my subscription was cancelled and I no longer had internet services at my place. My believe is that the subscription was meant to be cancelled on the 26rd of March 2018 as I pay in advance for my premium. And Nokuthula confirmed that no further deduction will be added on my account. With regards to the pro rata that was due to me I didn't chase Telkom as I just wanted my subscription to be cancelled. The 20th of March 2018 I received an invoice from Telkom which didn't make sense as I cancelled my subscription and I gave a months notice. I sent an email to Nokuthula and no feedback was given. I am still getting that invoice from Telkom and I have been sending numerous of emails to Telkom to have this resolved but am just being ignored. I should be the one harrassing Telkom as they owe me a pro-rata amount. I cannot be held liable for the company's incompetence. I submitted my cancellation in time and am still being penalized. I have all supporting documents and follows I've done with Telkom for my cancellation request and I have I have sent this to Telkom with no feedback.

This is bad for a company, they cannot treat customers in this manner. I will never ever use Telkom as a provider in future. They have lost me as a customer.