Cancellation of unwanted GET IT subscription

I had erroneously subscribed to GET IT Promotional/Benefits programme (affiliated with Cell C) [being talked into it during a telephonic conversation with an agent] and then tried to cancel it again as I was not interested to use any of the benefits. It took from 28 September 2015 until February 2016 to have the subscription cancelled and monies due to me refunded. Various phone calls, emails and visits to the Cell C store were necessary to finally having the problem resolved. Various excuses were made why the cancellation had not been processed yet, reference numbers could not be found on the system, etc. I was also told that I had not adhered to the cancellation period of 20 working days. When asking to speak to a supervisor I was not able to do so or receive the name. I find it shocking how persons get caught up by schemes like GET IT over the phone, drawing a nice picture how good the product is, how beneficial, etc. Especially an older person might not be able to understand everything and then gets caught - and then fighting again for months to get out of it - losing money in the process.