INCORRECTLY DEBITED

I was incorrectly charged R349.00 for data bundle purchases which TELKOM confirmed was an error from their as per reference number : ***5. I was however debited incorrectly an invoice amount of R 499.20. I have been calling customer services @ Telkom only to be told my query is being attended to. No timeframe for resolution is provided, each time I am placed on hold for long periods of time & I am forced to disconnect my call. Why is it that I as a customer must waste time, effort & resources to sort out an error on your side. I expect a full RECON of my account and refund of MY MONEY URGENTLY.