Unable to cancel service

We have had a business Telkom ADSL line at our office for 11 months. The line is poor and often does not work at all. We realised we could not continue running our business this way and found an alternative. I then wanted to cancel my existing Telkom service. I started by sending an email to [Email Removed] with a signed letter on our company letterhead. The email bounced. I then looked for information on the Telkom website, I could not find ANY information at all on the website on how to cancel a business service. I then went into the Rosebank mall to go to the Telkom store. It was closed for renovations. I then posted on their social media page and have not received a response. So I went to the Cresta store today. The consultant scanned my letter and ID and emailed it off. I have not received a single bit off corresepondence that the cancellation has been received. I believe this to be highly ********* behaviour! You should allow consumers to cancel the service easily and effectively. I want an answer as to why this process is difficult to impossible for so many people and I want to know if my cancellation was received and will be done.