Updated my contract and now service

I have recently updated my contract that will come into effect 01.10.2015, however up until then I am unable to use my current contract that has been paid for and whereby I have 720 talk minutes still available to me.<br> <br> as of the 01.10.2015 I will loose my talk time and I am sitting with a phone that I have given to my child in order to use to get in touch with me if and when he needs assistance. This is not acceptable and when I phone everyone advises it will take 4 days to sort out (and that is when the new contact kicks in) - to late.<br> <br> I need this to be sorted out and want to know how they are going to rectify the issue of me loosing my talk time that works out to approximately R1260 - R1.75 x 720