Impossible to cancel contract

<p>We tried to contact Telkom to cancael our wifi contract and were informed that there is no contact number for cancellations but only an email address. We completed the required cancellation forms and emailed them to the said address from which we gat an automatic response saying Telkom would respond within 21 days (which never happened). We have been trying to follow up via mail but receive no response and when we contact the contact desk (after spending hours on hold) they say they cannot assist and tell us to email cancellations. Telkom are continuing to send us invoices for monthly payments and are now adding penalty costs for not paying. Surely this is a breach in my consumer rights not allowing me to cancel this contact?! </p>