Cancellation impossible

Tried cancelling a contract last year, postpaid voice only a few months old, but the cost was too high and the headoffice took so long to process it that it fell out of the 21 day notice period I needed to give so would have been a big deduction in December, so I had to put a hold on the cancellation. <br> <br> While calculating the cost of the cancellation I also checked the cost of cancelling my older data contract. Which came to roughly R1400. I tried to cancel the data contract today after sitting on hold with the call centre (081 180) for almost 16 minutes, to no avail, as the call centre operator could not give me clear information about the cost of cancelling and after a +/- R1400 quote last year he is quoting me over R2000 today, which he could not be clearer about or answer my questions around.<br> <br> Besides sitting on the phone with slow and unclear operators (my own experience only) is there no simple way to know the cost of cancelling a contract before doing it and within the same month so I can plan my finances better. I have no problem with my voice and data services, but the call centre I need to get through to cancel a contract (purely financial planning) is dreadful.