Unhappy customer

Called on the 1 November after more than an hour on the call and still no feedback. (mailed twice) Been an MTN customer for 20 years and went over to prepaid I did everything as I was told but got charged an additional R164 for airtime they gave 17/9 and took back the 18/9 not used but still charged me. They put you through to so many people and all of them give different information 09:09 Pumelani 09:31 Tshipo 09:58 Imedi 10:13 Sekona which inform me the complaint will take 48 - 72 hours