Horrific Vodacom Call Centers

I have been trying to cancel my contract on multiple occasions. The same pattern occurs:

I am asked for my name and surname, then placed on hold (longest i waited out was 23 minutes).

Then I got hold of a lady that tried to persuade me for over 5 minutes not to cancel, and when I did not give in, she placed me on hold as well.

This is exceptionally horrific service.. I just want to CANCEL!! no one is able to help me, not even 2x of the vodacom outlets