Cant Cancel Service

I called the cancellations call centre to cancel my business account.<br> Was told the only way to do so was to email the request with supporting documents.<br> I did that ... 7 times...and received an automated response saying the email was received, and to make sure I had included all the documents...I DID this in MARCH.<br> <br> I now receive a letter of demand for outstanding monies owed because... <br> <br> \The reply from Telkom request a copy of the ID too