I have Vodacom for years I never had the same problem as this

I have recharged for R5 mtn airtime, and made calls but the numbers were on voicemail, I immediately dropped the phone call before even transferring to voicemail prompt, the my airtime got vanished, my data is off and out of bundle rate is off I called MTN I spoke with an agent called Nkanyiso who was rude with poor customer service with bad attitude, he told me they are taking 99 cents with is R1 for each call even if you did not listen to the voicemail prompt, I requested to speak to the Manager i was on hold for 7 minutes and transfered to a rude and heartless manager Nompilo the refference number of the call is *** she even asked me why did I call the number for several times, of which I believe that is not her problem, I told them no one told me about those terms and conditions, MTN should me informing us because I have been using mtn on the other founs for several times with no problem like this, I want them to refund my airtime and change that priceplan otherwise I am not recharging on the simcard, pushed by their rude agents with poor and pathetic client services including their managers, I believe that is day light *******