Subscription cancellation

After a lot of bad experiences I decided to end my relationship with Vodacom after being with them for many years. I just could not tolerate their bad behavior anymore. They bul**** me out of R900 rand for 3 months' subscription after my first attempt to cancel the monthly debit order threatening me to be blacklisted if not paying. I have all the reference numbers at hand but will only refer to incidents experienced not to take up to much space. Three different shops could not assist me. Customer service is pathetic not to speak about the arrogance of the Cancellations department. They refused to act on a mail I sent them to cancel the debit order. They acknowledged receipt of my mail requesting identification info. I gave all the identification info requested in the mail. They insisted on a phone call to cancel asking the very same info I mailed them. The guy I spoke to was not interested in my request to cancel the service but tried to sell any sort of services to me. I only got through to him after about 6 attempts to get through the process of reaching the Cancellations dept. Eventually I spoke to Cancellations on the 1st of November. I was told that I have to pay for November as well. Impression they left with me was if you request cancellation of a service they will go to any length to squeeze as much money out of you in a final round.