Telkom is unprofessional in handling my case

On the 23rd I had bought R900 airtime thru Telkom Mobile site I did all the inputting of my credit card details and son and by the time I hit the purchase button the site crashed, however the money still went off from my bank account. I called the Call Centre and was assisted by a lady called Masesi Tshabalala she asked me to send thru a bank statement showing this transaction, and I did... Same day on the 23rd and she could confirm that the money was paid from my account this is where she said she will contact her senior to look to the matter. A case was opened also but to this day I have not yet received my Airtime and I send emails on daily basis and I am told the same thing that this is being looked at. I run a business and this is costing me a lot because I keep on buying small bundles hoping that this one will be refunded back.