Rain has taken an ******* direct debit of nearly R900

Rain help themselves with a payment of R878.17 yesterday (23 Dec2022) without any notification as well as without any authorisation. I had an account/service with them about a year ago. Out the blue funds get deducted. What’s even more concerning is that Rain doesn’t have a direct debit. Rain would ask payments via an email/link/website advising you what is due & when you consent the amount to be taken it gets directed to your banking app to authorise the payment. This hadn’t been done. This sound like *****! I contacted Rain via the Facebook page & they asked my contact number as they have advised that they called me today & there was no answer. I then gave them my number & still no call. They have also said in the email that it’s funds I owed from May & June 2021. I just want my money which they had taken *******ly