Invoiced 4900 for cancellation

I cancelled my phone in September, after which i was billed and money deducted every single month after that.<br> It was well withing my cooling off period and the handset was not according to my specifications.<br> I though I had sorted this out but i received an invoice of R4,875 billing me for \cancellation\". I have been on the line for a few days and spoke to a lady last week that said i would be called back. I am tired of telkom and no person should have to go through the amount of nonsense that i have for the past 6 months. <br> the reference number i was given last time i called is ***5 this was on 03/02/2016. I should not have to keep reversing debit orders like a mads person and this will surely affect my credit record. I am so at my wits' end that I am going to take this to a lawyer to sort out.! it s ridiculous!!!"