Untold misery

I have experienced untold misery and loss of money due to problems trying to cancel two of my MTN contracts. Both contracts have run their 24 month course but it seems when you try to cancel afterwards by phone nothing is done. I have in the period of (+- 1 year) not received an account or billing of any sort and therefore accepted that the cancellation was successful. I have today received a letter from a lawyer demanding payment for outstanding fees. I have learnt the hard way and will stay away from them in future. I am not experiencing the same problem with other service providers.