Bad Customer Experience

I bought the rain SIM Card in March 2021. I paid R479 and tried to activate it...unfortunately the SIM Card refused to work. I called RAIN to inform them about rhe issue and I was told that the SIM card is faulty and must have been damaged by the courier company. I asked them to cancel the SIM card and refund me. It took almost a month to get my R479 refund. After paying back my R479, they decided to debit R139,06 from my account beginning of April. It's more than a month now, and they haven't paid back my money. What's frustrating is that they open a case number, and close it the next day without providing you with an update or resolving the issue. I have been with other service providers before, I have never experienced such a horrific customer experience/service. It's the worst.