Pathetic service from MTN

Yesterday I purchased 1GB of data, I barely used my phone and within three hours it was gone. I phoned MTN and explained, they said the network had updated and therefore I needed to phone back in two hours, they did not care that this meant that I needed to spend more money buying more data. I phoned back 2 and a half hours later and they still could not help. I phoned this morning and was told that the app did not convert the data and it was my fault for not checking the balnce and screenshotting the balanace (in case i needed evidence for an investigation later) even though the purchase was confirmed on the app. I was told that it was unlikely they would be able to help but that I must call back in 3 days to check, I asked why they would not call me back as it is their issue they said they could not. So make sure you screenshot every time your MTN purchase is confirmed by MTN or do not make the mistake I did and do not join MTN, this is the second time that this has happened. At least when Vodacom stole my data due to an issue with their system they apologised and refunded me. I will be doing everything I can to have another network buy out my contract as cannot afford 2GB of data a day.