Rain internet missimg in action

I signed up for a Rain data sim card. I received the card on the 2nd of March 2021. I received an sms informing me that my sim card was successfully activated. Still I didn't had any reception. I contacted *** and I used the support button on their website www.rain.co.za for assistance. The do not have a support helpline. Still today, on tbe 5th of March 2021, I haven't got any response and I still haven't got reception or internet. My device is working. My account is paid up front. I have coverage in my area. Any way that this can be resolved?