Constant disconnections and reasons that do not make sense from multichoice

At the beginning of the month I paid my Dstv account on the my Dstv app. I went on pay my account and on the app it said I owe R289.00 i then paid using my credit card. My connection has been cut off 3 times this month citing non payment .I phoned the call centre on all 3 occasions latest one being today. On the first 2 occasions they acknowledge my payment and re connected my Dstv .today when I called the call centre agent told me that the reason for disconnection is because I shot paid my account according to her I was suppose to pay R345 but I paid R289. On the DStV app it tells you how much you owe when making a payment and there is no where where you are able to manually change or choose how much to pay and also when paying you simply punch in credit card numbers and DSTV deduct the amount so today I have been told I need to make R265 reconnection fee .how is it possible that I pay more than R600 a month for a package that cost less than 350? And how is it my fault that the Dstv app charged me incorrect amount because at the end of the day I paid to watch the Dstv for the month of April?