Charged

I am extremely disappointed with Telkom , why would they charge me for a call while I have a voice bundle in my account. Called their call center and it seemed like their agent was clueless about their products, she told me a long story about the number that I called not falling under any service provider that is why I got charged for that call. Last week on a Tuesday called the very same number and I used a voice bundle the call went through without a problem, now that I have loaded airtime in my account they see it fit to charge me for that call