NEVER RECEIVED REFUND - ACCOUNT STILL DEBITED EACH MONTH

I am very disappointed with Rain. We cancelled our 5G late December and were told the device would be collected. I have emails proving this. The device has never been collected, and my account still gets debited every month (basically R9000 total by now). I have contacted Rain numerous times and every time they tell me that they have cancelled the subscription and that I will be refunded. Still has not happened... Feel like Rain is *****ing from me and there is no way to prevent it. I have contacted support so many times. Feeling hopeless...