Don't bother taking out a contract it is a nightmare to get it cancelled when it expires

I did an early cancellation on a phone and after being heckled with as why I wanted to leave Vodacom, got the amount to pay. This was on August 4th. The reason I did the early cancellation was I was going to be out the country when the contract expired. The cancellation never went through, instead the phone was put on pre-paid upgrade on who's authority I would like to know? I have spoken to the cancellations dept since my return on 16th, 20th, 22nd and 24th October and today was an all time record of being put on hold for 30 minutes by Amir while trying to get hold of Theona Ndlovu, the manager . This was after also speaking to Sizwe Freedom who promised she would phone back in the next few minutes and should wait by the phone. Needless to say she has not phoned me yet, nor has the phone number in question been cancelled or the mess sorted out.