MTN SA bunch of rip-off's

So this is my 2nd review that i have to do on MTN SA for debiting my account double every month since August 2020, this network provider let me think of a circus they are so *********** at what they are doing, it started of with a email then phone calls as long as 4 hours to get hold of them not even my local store wanted to help me, after numerous email i still have no answers from MTN SA after numerous calls still no answer but i get notified that my bill is on the way? What a bunch of bull**** they can send u statements but can't even adress one of my issues, i finally got hold of them via telephone got my references nr and was said to call back the next day i only called back 15 Feb 2021 giving them enough time to adress my problem but was told i must call back 19 Feb 2021. Are you MTN doing this to see if you can get more money out of me or what, do i have to go to the ombudsman to resolve or will you resolve before i have to take further steps?