Vodacom *****ing airtime

We have just updated a cellphone contract, the contract was signed and the services of the new contract was supposed to start the 1 March 2016, the old contract still had airtime and data available, the new contract was in place before the 1st of March and as we planned to utilise this remaining airtime and data, all of this was lost and after numerous phone calls and requests absolutely nothing could be done about this situation, fortunately the staff at the Vodacom outlet was very help full but unfortunately we cannot say the same about the head office, they didnt even attempt to help or gave a solution, and i need to add that we were about to change from Vodacom to Cell C as they offer far better packages and data offers we decided to stay with Vodacom to the greatest disappointment ever. Still up to now no one from head office tried solving this problem losing a few hundred rands worth of airtime and data is an big issue to me, and if Vodacom dis this to other people they probably ****** us a substantial amount of money, very disappointed in this service provider sadly i have a few accounts with them.