I paid R850 for Rain's 101 Pro package but was sent the cheaper R650 router

I paid R850 for Rain's 101 Pro package but was sent the cheaper R650 router. The courier noticed the mistake, and I immediately called Rain. They told me to pay R81 to correct their error, which I did. The correct router was delivered, and the wrong one collected. Yet, on June 15, Rain debited both R850 and R650 from my account—charging me for two routers. Despite emails, chatbot messages, and calls, I keep getting the same automated replies: "escalated," "billing will call you," but no one ever does. A consultant even claimed I still had both routers, which is false. I’ve done everything right, but Rain refuses to fix their mistake or refund me. This is unacceptable and feels like theft. I’ll escalate this if not resolved.