Contract - Thousands of minutes but can't call 1023

<p>I upgraded and took a new 24 month contract in December last year. I can't dial MTN directory enquiries as I have "no Rand value" on a contract that has thousand of minutes and 57GB if data per month.</p> <p>I am appalled - was put on hold waiting for retentions. Nobody told me that I would need to buy airtime to make simple calls to their own services. I want to cancel as this was not stipulated.</p> <p> </p>