cansellation of business account

I want to cancel my business Telkom line but with no success.<br> on 20/01/2016 I visit my local Telkom branch in Springs Gauteng.<br> I handed all necessarily document to the consultant to cancel the lines but the lines was still active after 20 days.<br> I call the business call Centre on 11/02/2016 and the person said that all cancellation must be emailed and that no branch can arrange a cancellation.<br> I email the document including a cancellation letter of my company but still the lines is active on 16/02/2016. <br> I resend all documents via email to the given address also made a call to the call centre at the same time. The consultant gave me a 0800 number to call, but this is a test centre and not a cancellation department as he inform me that this is the recommendation of his department supervisor.<br> Can any body do something about this bad service please