Unable to cancel account

I have been attempting to cancel my Telkom ADSL and landline since April 2018 . It is now August. We have just moved into a rental apartment in April and had taken over their ADSL and landline. It took Telkom over a month to change over ownership. When it was finally transferred into my name, I attempted to cancel it online and received an error message saying my request could not be processed. Telkom does not have a telephone line to log these complaints (quite poor service for a telecomms company) so I went into a Telkom store to find out if they could possibly help. The assistants in the store tried from their side but also received the same error message. The lady at the store then logged a complaint with Telkom. I was told it would 72 hours for them to get back to me with a response. I did not receive any response and therefore contacted Telkom via email where there was a lot of back and forth and it did not appear that they even understood the nature of my problem and continued to tell me to use the online portal as they cannot cancel the service for me (unfortunately there is no continuity of responses and a different person responds to each email in the thread). Someone eventually responded and sent through a form to fill in and an email address where I could forward the cancellation form. Upon sending the form, I have now received a response telling me that they no longer utilise the email form process and that I have to use the online portal to cancel the services!!!!! This continues to give me an error messgae!!! I am incredibly frustrated and am still paying for a slow and ineffective internet service. My husband and I occasionally have to do work from home and can therefore not tolerate an intermittent internet connection which is what we have been receiving. Telkom really needs to get their act together and stop messing their customers around.