Unable to use SIM card

I have tried several times but I am unable to make calls or send Sms’s using my Rain SIM card. Even when I try to call my number it goes straight to voicemail. I can only use the data when I put the simcard in a router. I have tried to follow the steps to set this up but have still had no joy. I do not have Rain talk on my App Store.

Please contact me to assist as I do not know what channels to use to get support from Rain. Last time I put my query on the website and was never contacted. I am only able to get assistance on this Hello Peter platform. The last person I spoke to told me to use the social media pages for assistance but I am unable to find Rain on Facebook or Twitter.

I’m really frustrated with the struggles that I have been going through with Rain.