24 month contract, not a 24month and 19days

I've been a loyal customer for more than 10yrs and I expected better service than what I got today. Earlier today I phoned cancellations call centre to give notice for my contract that expires on 11/06/2015. The consultant explained that I can only cancel as at 30/06/2015. That I need to pay a month subscription for June. <br> My contract ENDS on the 11/06/2015!!!!!!<br> <br> When I requested what will the cost be if I cancel it with immediate effect, the consultant said that the quote gave a ZERO balance and that their system must be wrong and I should phone again on the 11/06/15. <br> <br> All I ask of Vodacom is:<br> 1. Cancel my contract on the 11/06/15 as per our contract without additional costs.<br> 2. Switch my sim to pay-as-you-go.<br> <br> Regards,<br> <br> Lucinda Africa<br>