Worst Service

I cancelled my contract almost 2 years ago with Telkom. To my surprise they are still debiting my account and whenever I attempt to contact them I never succeed.

I have made numerous attempts to call their call centre and everytime it is either the call will be placed on hold or it will be answered then am told I will have to wait whilst they are "investigating".

I am now sick and tired and hoping that someone out there can share some advice on how best to deal with this mockery.