Unable to Cancel

I have been trying to cancel my Telkom adsl for 2 weeks now being transferred from one call center operator to another, I've been in store and told they cannot help me as they do not do cancellations, been on the online chat as well with no help. I have filled in all required documentation but the email given does not work, thus making it impossible for me to cancel thus forcing me to pay yet another month. I have tried the online customer portal cancellation option as well but it shows 3 different packages on my contract even though i only have 1.