Disappointed with service

I purchased a Rain Sim card 2 days ago. I can NOT activate the RICA on the card and rain isn't allowing me to do so! It is so disappointing and frustrating! Rain charged me R479 for a 4G Sim that doesn't work, this is so not on! I want my money back! You can not call as call centre's are closed due to covid but surely employees should be able to work from home, as they claim to be doing on their call centre line. I want my money back, Rain! Utterly disappointed with there service.