Blaming me for their fault

<p>On Wednesday 20 July 2016 I was contacted by Vodacom with them stating that my account has not been paid. I told the agent who phone me to call me the next day (Thursday 21 July 2016) at 12 and she never phoned me back.</p> <p>I upgraded my contract a few months ago and was told in store that my contract and debit order for the contract would continue as usual. Now I found out that they stopped the debit order and now they want me to pay more than I owe.</p> <p>My contract costs me R550 MAX a month (should be a bit less since I downgraded my sim contract), and I missed payment for 2 months. According to Vodacom I owe them almost R3000 for 2 months' missing payment. How is this possible? Quick math: R550 x 2 = T1100 +- R300 for upgrading fee so I actually owe less than R1500. </p> <p>Now they want over R3000 from me? That's more than double!! No ****** way I'm paying that much for a fault that was caused by Vodacom. It's a clerical error from them, and now they blame me for it. Unacceptable!!!</p> <p>I have proof that I payed up to 3 May 2016 and my account was still good till then.</p> <p>I'm going to refuse to pay that much, I'm more than happy to settle this asap and to continue the debit order as was agreed upon when I upgraded, but I'm not gonna pay for a mistake that you made.</p>