Dissatisfied customer

MTN continues disappointing me,I’ve been their loyal customer for over 8 years now but sometimes I just feel like packing my bags and to Vodacom or any other service provider for that matter,this morning at 7:21am I bought a rush hour voice bundle (Mtn -Mtn) as I wanted to make a phone call that was going to be long and did not want to waste my minutes (contract) ,so they sent me a message at 7:22am informing that my rush our calls was active and will expire at 8:21am so I went ahead and made the call and little did I know that they will deduct my minutes (60) as well the same minutes that I was trying to save meaning I paid twice for a single call. As frustrated as I am I picked up my phone and call 135 to find out what the hell is going on and spoke to pinky who could not do much for me as their systems last updated at 7:06 so they have no records of what I was saying and I have to call them back in 2 hours time and she does not think they'll be able to refund my minutes but maybe they can refund my 6rand like what on earth? MTN allowed me to buy that R6 rush hour and they told me that it was active had I known before the call that my minutes were going to be deducted as well I wouldn’t have made the call .this is totally unacceptable!