Shocking service

I have been trying to sort out international roaming on my sons phone, i was advised that the account was R266 which i immediately made a payment for and was told that it would be rectified within about 2 hours (this was on Sunday) i called back 2 hours later to discover that it hadn't been sorted out and was told to call back in another 1 to 2 hours. It is now Monday and my son is traveling to Germany tomorrow and as it stands we will not be able to contact him overseas...i have tried to call the Vodacom accounts department twice again this morning and the call just cuts off... this is absolutely appalling service and i am now thin king of cancelling both my contracts with Vodacom.....