Invoice complaint

<p>I've just got back from an overseas trip. While on holiday, I made a few calls to family which went through with no hassle. No voice prompt to tell me I'm not allowed to make calls or that I will be billed for the calls. I'm on a fixed contract that CANNOT go out of bundle as I chose the option to rather buy minutes/airtime if my minutes is depleted.</p> <p> </p> <p>I've just received an invoice that says my current balance is R1500!!!!</p> <p> </p> <p>Surely I should've received some sort of warning or voice prompt when MTN detected that I'm making calls from outside the country? Also, what's the point of having a cap on my account only to have an invoice now of R1500?</p> <p> </p> <p>MTN, please reverse this amount as I'm not keen on paying for something that I was not made aware of...my debit order goes off in the next day or two so I would appreciate that this is sorted before then.</p> <p> </p> <p>Regards</p> <p>Isgak</p>