The errors is on our side, but ***** you, we won't help!!

In my life I have never had such a ***** you like I got from Momentum. To put you in the picture, I moved my Mom (now almost 66) to Momentum ages ago because they would look after her. And no problems. Last year my mom had a problem with her bank account and called in on the 17th of October 2020 to update her details. Come November and no money is deducted from her account and then Momentum cancels her insurance. My Mom then contacts Momentum and they say there was an error. She calls her bank and they confirm that there was money in the account and that there was NOT request from Momentum for a debit order. I then get involved as my Mom doesn't understand the ins and outs of insurance. I speak to an advisor by the name of Lerato, she can see that there was an error, but can't see from which side the error is from. She said she will call me back. Strike 1. I call her again and finally get the answer that it was an error on their side and she will escalate it. So in the meantime my Mom is sitting without insurance. She says don't worry. I get hold of her again and she says that they will fix it and is currently with the finance department. She will get back to my once it is done. Strike 2. I have called a number of times trying to get hold of her to find out what the hell is going on. I even left a message threatening to go to social media about this and guess what nobody gave a sh"t!!. Or were you hoping COVID would help you out. So now here it comes. So now my Mom is sitting without insurance, a cancellation of policy on her name and stressing should anything happen, what is she to do. If Momentum's system is so **** that it can't re-instate the policy and able to remove the cancellation from my Mom, start a new one and discount the rate to where it was. How hard is that?? In terms of Treating customers fairly, this has totally missed the mark. I know that their premium wasn't the biggest one on your books, but everyone should count. This is not the Momentum I know and am really shocked. Do you want me to get on every platform and shout about this? Just get it fixed!! Heavens forbid should something happen to their stuff now!!