Cancel 3G contract within one month

Hi ,<br> <br> I'd like to make a formal note that I would like to cancel my 3G contract with mtn within the one month bracket of signing up with them.<br> <br> As their system is down I'd like to make sure that this request is logged within the allotted time. I had hoped to change contracts after Nashua mobile closed ( and I've had horrific situations with mtn in the past ) but the kind lady on the customer care line convinced me that this 3G contract was a good idea. However it seems I should definitely have cancelled it! She assured me that there is a one month period in which to do so. Seeing as my sim card has not been delivered, I am sure I can cancel this contract - ie their service has not been fulfilled. <br> <br> Thank you for your help