Vodacom again!

Bought a sim for someone who is doing calls for me, for my business. Juts bought 250 airtime and it did not register. Called and told them what this is for, international calls and was told this would not work. When I said I need to reference the 250, I was told it's my problem. Every time there is an issue with Vodacom you need to post the issue here before they correct anything. On my contract phone i can't even open my past invoices, always technical issues.