Charging me for Downtime & Calls not made by us

I think Telkom has a cheek! In December I received my invoice and there was an amount for calls made from out landline, amounting to R27. The funny thing is I don't have a landline unit in my house, never have! I only had that service because I needed the ADSL. I submitted 3 disputes for this amount, and today I get my invoice and the amount is still on my account! To top it off, on the 11th February 2016 I sent through a cancellation of all services to the Cancellation Department to cancel my services (or non-services received) with immediate effect. I am still waiting to hear from this department 7 days later! Now here is the cherry on the top, our Telkom lines have been down since the 2nd February 2016 (Reference 308CTK020216), yet I am being charged for this? I want Telkom to rectify their billing. I will not be paying for services from the 15th February to 14 March 2016 as I have cancelled my services with Telkom with effect of the 11th February 2016. I would like the billing rectified for dates 02 February to 11 February 2016 as we have not had any service due to the lines being down.