Pathetic service & rediculous charges

Good Day,<br> <br> I'm so sick of MTN, every time I load airtime onto my phone and make calls I get charged ridiculous amounts and even when I buy bundles after a day or 2 I'll get an sms saying that my data has expired and I have tried to call MTN numerous times to find out what seems to be a problem and every time you phone their call centre they'll put you on hold for 30 min & eventually the call drops.. Today the 1st of May 2015 I had a balance of R 16 and I made a call that only lasted a min and my airtime was gone, left with R1,75 so MTN charges R14,25 a min for a call that's ridiculous.. Some times you'll have airtime but when you try to make a call it tells you that you have insufficient funds. I'm so sick & tired of their pathetic service