Mission to end a contract and take out a New one

<p>I have 2 contracts out of 6 contract expiring on the 18th and 24th October. I don not wish to renew them by the end and convert them to pay as you go for now till i see a special offer that suits my needs and wallet.</p> <p> </p> <p>The problem is No one can help me now for the system only allows 30 days for notification before expiary. Why cant Vodacom update thier system so that you can notify them earlier that when your contract reaches the end that you wish to end it.</p> <p> </p> <p>This is very unfair seeing that they allow you to upgrade long before the expiary. Can someone help me for tge call centre could not help me.</p>