Line cancellation impossible

I cancelled my Telkom ADSL and landline services 14/12/2015, effective 14/01/2016 after 30 days notice. I am still being billed for all services, I have reference numbers running out my ears but nothing is being done. <br> Costs have been reversed but it is once again piling up because nothing is cancelled. How can it take 4 months to do something that should take a few minutes at most?? <br> The local Telkom shop can give me any service that I apply for, why can they also not cancel my service if needed? It is an extremely stupid system and it is frustrating me no end!! Please sort this out.